x=111, n=194, Confidence level = 99%

Q: All else being equal, a 90% confidence interval will be longer than a 95% confidence interval. True…

A:

Q: Find the margin of error E that corresponds to the given statistics and confidence level.…

A: From the provided information, Confidence level = 98% Sample size (n) = 900 Success (p̂) = 0.40

Q: Describe about finding t confidence level.

A: Rules for using a t confidence interval as follows: Population standard deviation is unknown and…

Q: What is the confidence level for the interval X±1.645

A: Given:

Q: Find a 95% confidence interval for a mean, µ, where n = 324, x̄ = 2.7, s = .91, and se = .06.

A: Given: n = 324, x̄ = 2.7, s = .91, se = .06.

Q: Describe about the Level of Confidence.

A:

Q: If n = 230 and X = 184, construct a 99% confidence interval for the population proportion, p.Give…

A: Given data n = 230 x = 184 sample proportion

Q: Confidence level-99%, degrees of freedom=19 JE

A:

Q: A poll of 350 people is taken and the confidence level is 90%. What is the margin of error (MOE)?…

A:

Q: what is the value for x^2 left for a 95 confidence interval when n=18

A:

Q: If n = 180 and X = 144, construct a 90% confidence interval for the population proportion, p. Give…

A: Solution: From the given information, X=144, n=180 and the confidence level is 0.90. The sample…

Q: I want a 99% confidence within 2% for the true proportion of bald people in the US.  How many people…

A: Given that, Margin of error E=0.02 Confidence level is 99% Critical value: The two tailed z critical…

Q: one city, 79.6% of the 8500 students surveyed said they eat at the school cafeteria. Find the 95%…

A: Given n=8500

Q: Suppose you want to increase the level of confidence without reducing the precision. What can you…

A: The confidence interval at 100 (1 – α) % confidence level gives us an interval estimate about the…

Q: In one city, 59.6% of the 1500 students surveyed said they eat at the school cafeteria. Find the 95%…

A: Given, Sample size=n=1500 p^=0.596 α=0.05

Q: ccording to the data, calculate a 90% confidence interval for the sample mean. What was the T Score…

A: Solution: n= 30 Sample size ∑xi=642 x=∑xin=64230=21.4 Sample mean s2=∑(xi-x)2n-1=56.52414 Sample…

Q: N= 100 x= 46.25 0=4.8 ) what is the 95% confidence interval for µ

A:

Q: accounting examination is 26, how large a sample is needed to estimate the true mean score within 6…

A: HERE GIVEN , n = ??? population standard deviation  =  26  confidence level  = 99%

Q: The principal of a school claims that 30% of grade 3 pupils stay in the playground after their…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

Q: (a) Confidence level = 95%, df = 10 (b) Confidence level = 95%, df = 15 (c) Confidence level = 99%,…

A: a)Given,df=10α=0.05critical value is 2.228

Q: All other things being equal, would a 95% confidence interval be smaller or larger than a 90%…

A:

Q: Use the confidence interval to find the margin of error and the sample mean.   (0.676,0.800)

A: The margin of error is the most common term which we use in a confidence interval. It is the degree…

Q: the sample proportion of females is  x=118  n=164 P = .720  #1 Make a 95% confidence interval for…

A:

Q: If n=10, ¯x(x-bar)=38, and s=5, find the margin of error at a 80% confidence level Give your answer…

A:

Q: In the Laboratory Activity, we used 90% confidence interval instead of 100%, why is this so? Why not…

A: Confidence Interval A confidence interval (CI) is a set of numbers that assess the validity of the…

Q: If n = 180 and X = 144, construct a 99% confidence interval for the population proportion, p. Give…

A:

Q: Construct a confidence interval of the population proportion at the given level of confidence. x=…

A: Given that sample size n = 1200 And number of successes x = 540 Confidence level = 98% = 0.98 At…

Q: 4) Out of the 440 people surveyed, a 110 said they listen to Spotify at least one a month. With the…

A:

Q: Find a Confidence interval for the true Population Proportions if n = 30,        x = 75, and the…

A: From the given information, X=75 and n=30.

Q: The proportion of junior executives leaving large manufacturing companies within three years is to…

A:

Q: Express the form of most of the confidence intervals that you will encounter in your study of…

A: Confidence Interval:Confidence interval is the interval estimate of the population parameter. It is…

Q: A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie.…

A: From the given information, The percentage of chocolate pie is 14%. There are 500 respondents.…

Q: 4. n=180, a = 55, level of confidence is 95%.

A:

Q: what is the predicted value for the return of GM given that the S&P500 return is 5% 2 The number of…

A: The regression equation is GM^=0.005860+0.904753S$P500.

Q: If n=550 and X = 440, construct a 90% confidence interval. Give your answers to three decimals <p<

A:

Q: and X = 96, construct a 90% confidence interval for the population proportion, p. Give your answers…

A: Given X=96 N=120

Q: A Harriss poll taken surveyed 2016 adults and found that 423 of them had one or more tattoos. can…

A: The hypotheses for the test is given below.Null hypothesis:H0: p = 0.25Alternative hypothesis:H1: p…

Q: If n = 20, the sample mean = 250, SD = 15, SEM = 3.354, what is the confidence interval (using 95%…

A: The formula for a confidence interval for the population mean μ\mu when the population standard…

Q: Translate the statement into a confidence interval. Approximate the level of confidence.

A:

Q: A magazine provided results from a poll of 1000 adults who were asked to identity their favorite ple…

A: It is given that the sample size is 1000.

Q: what sample size should a researcher take if he wants to estimate a population proportion to be 2%…

A: From the given information,   Margin error = 0.02 Assume sample proportion = 0.5   Critical value:…

Q: A magazine provided results from a poll of 1500 adults who were asked to identify their favorite…

A: The probability of people choose chocolate pie is 0.13.

Q: If n = 550 and X = 440, construct a 90% confidence interval for the population proportion, p. Give…

A: Given information:Total number of trials (n) = 550Number of success (X) = 440Confidence level = 0.90

Q: Find the margin of error for the given confidence level and values of x and n. x = 111, n = 194,…

A:

Q: Visitors to Joshua Tree National Park were 94.14 percent confident that they would see a coyote.…

A: The confidence level is 94.14. 1-α=0.9414α=0.0586α2=0.02931-α2=0.9707 The critical value of…

Q: If a 95% Confidence for the Population Proportion is (0.56, 0.78), fınd its Margin of Error.

A:

Q: Researchers studied the mean egg length (in millimeters) for a bird population. After taking a…

A:

Q: Find the value of −zα/2 that corresponds to a confidence level of 89.48​%.

A:

Q: Solve for the sample size with the assumption that the confidence coefficient is 95% and second, the…

A: Sample size estimation is integral part of inferential statistic.

Q: What is the level of confidence as a decimal? Ex 0.55 What is the margin of error? 2.509 What is the…

A:

Trigonometric Identities

Trigonometry in mathematics deals with the right-angled triangle’s angles and sides. By trigonometric identities, we mean the identities we use whenever we need to express the various trigonometric functions in terms of an equation.

Inverse Trigonometric Functions

Inverse trigonometric functions are the inverse of normal trigonometric functions. Alternatively denoted as cyclometric or arcus functions, these inverse trigonometric functions exist to counter the basic trigonometric functions, such as sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (cosec). When trigonometric ratios are calculated, the angular values can be calculated with the help of the inverse trigonometric functions.