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- Repeat Example 5 when microphone A receives the sound 4 seconds before microphone B.A medical researcher says that less than 86% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 400 adults in that country, 84% think that healthy children should be required to be vaccinated. At a=0.10, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. (a) Identify the claim and state H, and H Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) O A. The percentage of adults in the country who think that healthy children should be required to be vaccinated is not % O B. Less than % of adults in the country think that healthy children should be required to be vaccinated. O C. More than % of adults in the country think that healthy children should be required to be vaccinated. O D. % of adults in the country think that healthy children should be required to be…EXER 6.3 Find the covariance and the correlation coefficient between X and Y, if X and Y are jointly discrete random variables, with joint PMF given by: SHOW SOLUTIONS X\Y 0 1 6 0 28 6 1 28 2 0 333333 28 28 28 2120 28 0
- A medical researcher says that less than 82% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 300 adults in that country, 78% think that healthy children should be required to be vaccinated. At a =0.10, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Ho and H Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) O A. Less than % of adults in the country think that healthy children should be required to be vaccinated. O B. The percentage of adults in the country who think that healthy children should be required to be vaccinated is not % OC. More than % of adults in the country think that healthy children should be required to be vaccinated. O D. % of adults in the country think that healthy children should be required to be…A medical researcher says that less than 82% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 300 adults in that country, 78% think that healthy children should be required to be vaccinated. At a = 0.10, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Ho and H Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) YA. Less than 82 % of adults in the country think that healthy children should be required to be vaccinated. O B. The percentage of adults in the country who think that healthy children should be required to be vaccinated is not %. O C. More than % of adults in the country think that healthy children should be required to be vaccinated. O D. % of adults in the country think that healthy children should be required to…esc Suppose a certain state university's college of business obtained the following results on the salaries of a recent graduating class: Ho: 1 Ha Finance Majors Business Analytics Majors 72 = 30 X2 = $55,417 $2 = $10,000 (a) Formulate hypotheses so that, if the null hypothesis is rejected, we can conclude that salaries for Finance majors are significantly lower than the salaries of Business Analytics majors. Use a = 0.05. (Let μ₁ = the population mean salary for Finance majors, and let μ₂ = the population mean salary for Business Analytics majors. Enter != for # as needed.) ul-u2 ≤0 66°F Mostly sunny ? 7₁ = = 120 51 = $19,000 = = $48,437 ul < u2 (b) What is the value of the test statistic? (Use µ₁ −µ2. Round your answer to three decimal places.) - -1.943 X 12 (c) What is the p-value? (Round your answer to four decimal places.) p-value = .9973 x (d) What is your conclusion? Reject Ho. We cannot conclude that salaries for Finance majors are significantly lower than the salaries of…
- B. Suppose that y1, Y2, ., Yn idN (0, o2). We wish to find the most powerful test for Ho: 02 = o3 against HA: o? = oa, where o > .200 males and 200 females are asked a series of questions to determine whether they are considered heavy drinkers or not. 66 of the males are considered heavy drinkers. 83 of the females are classified as heavy drinkers. Execute a hypothesis test as to whether there is a relationship between gender and drinking at alpha=0.05 USING CHI-SQUARE. State Ho and Ha, calculate the p-value, determine whether you reject Ho and state the conclusion in plain English.A medical researcher says that less than 72% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 300 adults in that country, 70% think that healthy children should be required to be vaccinated. At a = 0.10, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. (a) Identify the claim and state H, and H, Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) O A. More than % of adults in the country think that healthy children should be required to be vaccinated. В. % of adults in the country think that healthy children should be required to be vaccinated. O C. Less than % of adults in the country think that healthy children should be required to be vaccinated. %. O D. The percentage of adults in he country who think that healthy children should be required to be…
