Given the scenario below, what is the obtained statistic (obtained value)? Americans typically take off 5 sick days each year, with a standard deviation of 2 days. A researcher would like to know whether psychiatrists take off less sick days than the average American. The researcher obtains a sample of 16 psychiatrists who, on average, take 3 days of sick leave a year. Test this researcher s hypothesis using an alpha level of .01.

Q: To see if young men ages 8-17 years spend a different amount than the national average of $24.44 per…

A: Given : Claim : young men ages 8-17 years spend a different amount than the national average of…

Q: In a recent year, the scores for the reading portion of a test were normally distributed, with a…

A: Mean is 20.4 and the standard deviation is 6.5.

Q: In a study investigating the effect of car speed on accident severity, 5,000 reports of fatal…

A:

Q: it can be concluded that the new reading technique _

A: Given: µ = 3 σ = 1 X = 4 A z-score is known as the standard score that determines how much the data…

Q: Orange juice is bottled on two different production lines. A sample of 5 bottles from the first line…

A: Given problem Given that Orange juice is bottled on two different production lines. A sample of 5…

Q: he average American consumes 95 liters of alcohol per year. Does the average college student consume…

A:

Q: Consider the following hypotheses statement for the average life span of a laptop battery: Ho: p= 4…

A: It is given that Sample size n = 60 Sample mean = 4.1 Population SD = 0.3

Q: Suppose, at a local movie theater, the amount of money that a man spends at the concession has an…

A:

Q: THME REMAIIN: 02:53:15 Response time is an important statistic for measuring the effectiveness of a…

A:

Q: ed in the US from 1968 to 2008. Suppose that the daily high temperature reading on January 1 was…

A: SE=sn=4.7548=0.6856

Q: In this problem, we consider a small set of evidence for global warming by comparing how…

A: Given: d=1.15,SDd=4.25,n=54

Q: When Boubacar commutes to work, the amount of time it takes him to arrive is normally distributed…

A: we have to find out given probability ...

Q: In a study investigating the effect of car speed on accident severity, 5,000 reports of fatal…

A:

Q: Use the following scenario to answer the next 6 questions. An engineer has designed a valve that…

A: From the provided information, Sample size (n) = 30 Sample mean (x̅) = 4.8 Sample standard deviation…

Q: A survey using a sample size of 11 reveals that the average size of dairy farms in Simcoe County is…

A: t-test is a parametric test which is used to compare the mean of one or two samples. It is a small…

Q: there sufficient evidence at a=0.01 to conclude that their health care expenditure differs from the…

A:

Q: A manufacturer claims that the average life of batteries used in their electronic games is 150…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: In a study investigating the effect of car speed on accident severity, 5,000 reports of fatal…

A: Given n = 5000, μ=43 and σ=17 Using standard normal, Z=X-μσ ~ N(0,1)…

Q: Using a college cost estimator, the average of campus rental at Penn State is approximately $547 per…

A: Note: Hey, since there are multiple subparts are posted, we will answer first three subparts for…

Q: The Water Resource Department claims that the mean pH level of the river water is 6.8. You randomly…

A: Given,sample size(n)=19sample mean(x¯)=6.7sample standard deviation(s)=0.24population…

Q: For a population of leghorn chickens, the mean number of eggs laid per chicken is 7.3 with standard…

A: Given information: μlegborn=7.3σlegborn=1.7μsussex=5σsussex=0.85 Two independent ransom samples of…

Q: The following sample n=4 scores was obtained from population with unknown parameters. Scores 2,2,6,2…

A:

Q: particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs…

A:

Q: The random variable ? represents the reaction times, in milliseconds, of girls in a driving…

A: The mean is 355 and the standard deviation is 52.

Q: Crispy Biscuit Manufacturers label the calorie content of 400 cal per 250 gram package. The Consumer…

A: Given Information: Sample size (n) = 100 Sample mean (x¯) = 406 cal Sample standard deviation (s) =…

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A: Given : Hypothesized Mean, μ0 = 4.9 Population standard deviation, σ = 0.84 Sample mean , x = 4.2…

Q: 4. A recent study stated that if a person smoked, the average of the number of cigarettes he or she…

A: Given that  Hypothesized Population Mean (\mu)(μ) = 1414 Population Standard Deviation…

Q: The heights of American men are normally distributed with a mean of 65.3 inches and a standard…

A: We have given that  Mean(µ) = 65.3Standard deviations (σ) = 2.6X ~ N (µ, σ )= N(65.3, 2.6) z-score…

Q: Two independent laboratories have produced drugs that provide relief to arthritis and the results is…

A: 4. Let μ1 denotes the mean of laboratory A and μ2 denotes the mean of laboratory B. Given:…

Q: An automatic coffee machine dispenses cups of coffee whose volume per cup varies normally with the…

A: Answer :

Q: Find quartile deviation and its co-efficient from the following data.

A: The quartile deviation is defined as Q.D = (Q3 - Q1)/2 Where Q3 = third quartile and Q1 = first…

Q: To see if young men ages 8-17 years spend a different amount than the national average of $24.44 per…

A: The random variable amount spent for shopping trip follows normal distribution. The population mean…

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A: The random variable people who receive loans will not make payments on time follows binomial…

Q: newspaper reporter is writing an article on employment status for young people who don’t have a high…

A: Given that  Sample size n =24 Sample mean =24970 Sample standard deviation =2300

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A:

Q: Are serial killers more introverted than the general population? A sample of 14 serial killers…

A:

Q: Moodle + > X UO I Exam mav Question 1 The MTI Enterprise has a total of 300 employees in its two…

A: We have to find given probability.

Q: Nationwide, the average salary of actuaries who achieve the rank of Fellow is $155,000. An insurance…

A: Given, μ=155,000 x-=152,000 s=7,000 n=15 α=0.01

Q: To see if young men ages 8-17 years spend a different amount than the national average of $24.44 per…

A:

Q: In a class of twenty-five 15-year old girls the average height is M = 62.60 inches. The national…

A: Given that, μ=63.80,s=2.66, M = 62.60 and n=25 The  effect size Cohen’s d is, The  effect size…

Q: 2. Students may be interested in whether the cost of a TI-84 plus calculator varies from store to…

A: Given , n = 40 , s = 12

Q: You may need to use the appropriate appendix table or technology to answer this question. A producer…

A: Solution Given μ0=84 σ =9 Xbar=85.7 n=36

Q: In a study investigating the effect of car speed on accident severity, 5,000 reports of fatal…

A:

Q: In a study investigating the effect of car speed on accident severity, 5,000 reports of fatal…

A: The vehicle speed (X) is normally distributed with mean, x=54 mph and standard deviation, s=11 mph.

Q: An article reported that for a sample of 45 kitchens with gas cooking appliances monitored during a…

A: Confidence Interval - In interval estimation, confidence interval gives amount of error that can be…

Q: Use the following scenario to answer the next 6 questions. An engineer has designed a valve that…

A: Given: Sample size (n) = 30 Sample mean (x̅) = 4.8 Sample standard deviation (s) = 1 Level of…

Q: 2. The average credit card dept for a recent year was P43,100. Three years earlier the average…

A: Given: X~Nμ,σ2X1=43100X2=41890n=50s1=s2=7810=s  (say)

Q: In a class of twenty-five 15-year old girls the average height is M = 62.60 inches. The national…

A: Given that M =62.60,μ=63.80,σ=2.66,n=25 (2) The value of effect size Cohen’s d is, Thus, the value…

Q: Suppose that the average number of Facebook friends users have is normally distributed with a mean…

A: "Since you have posted a question with multiple subparts, we will solve first 3 sub-parts for you.…

Q: State the hypothesis for the following: The mean height of 50 male students who showed above-average…

A: We have given that  n1=50 , Xbar1=68.2 , S1,=2.5 n2=50 , Xbar2=67.5 , S2=2.8

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.