Hypotheses for a statistical test are given, followed by several possible confidence intervals for different samples. In each case, use the confidence interval to state a conclusion of the test for that sample and give the significance level used. Hypotheses: Ho:p = 0.7 vs Ha:p # 0.7 (a) 95 % confidence interval for p: 0.55 to 0.85 Conclusion: Но Significance level: (b) 95 % confidence interval for p: 0.84 to 0.90 Conclusion: Но Significance level: (c) 99 % confidence interval for p: 0.66 to 0.82 Conclusion: Но Significance level:

Q: Using a t-table or a t-score calculator, find the value of t for sample size (n) of 25 to estimate…

A: Sample size n=25

Q: We have presented a confidence interval (CI) for the difference, μ1 − μ2, between two population…

A: It is given that the 99% confidence interval for the difference between two population  means is…

Q: A confidence interval for a sample is given, followed by several hypotheses to test using that…

A: Given 99% CI for population mean μ is 120 to 158. Result: If the null hypothesis value lie in the…

Q: How large of a sample is required for a poll to have an error of less than 1.2% at a 90% confidence…

A: Given that  Margin of error =E =1.2%=0.012 90% confidence level.

Q: If n=130 and p (p-hat) =0.53, find the margin of error at a 99% confidence level Give your answer to…

A: The sample size is .The sample proportion is .The confidence level is .

Q: The following results come from two independent random samples taken of two populations. Sample 1 n₁…

A: a) Two independent random samples are taken from two populations.

Q: 1 out of 500 randomly selected fish from Lake One are poisoned, while 28 out of 600 randomly…

A: We have to find confidence interval for difference in proportion.  Formula :  CI…

Q: The purpose of a confidence interval is: O To test a claim about a population parameter. To find a…

A: It is needed to find the purpose of confidence interval.

Q: Find the critical values Zc that corresponds to an 82% confidence level.

A: The confidence level is 82%.

Q: construct a 99% confidence interva

A: Given : n=420 , p-hat=0.9  , α=0.01 We want to find the The 99% confidence interval for the…

Q: If n = 300 and p (p-hat) = 0.15, construct a 90% confidence interval. %3D

A: Critical value: Using Excel formula "=NORM.S.INV(1-(0.10/2))", the z value for 90% confidence level…

Q: am interested if there is a difference in the mean amount that freshman and seniors spend on texts…

A: Given that random sample of 54 freshman and 52 seniors. Based on these samples a​ 95% confidence…

Q: Create a 95% confidence interval for the population proportion of Orange candies.  sample size is…

A: From the provided information, Confidence level = 95% Sample size (n) = 30 Point estimate (p̂) =…

Q: If a school district takes a random sample of 75 Math SAT scores and finds that the average is 433,…

A:

Q: Hypotheses for a statistical test are given, followed by several possible confidence intervals for…

A: The 95% confidence interval for µ1– µ2 is given as 0.14 to 0.37. Since the 95% confidence interval…

Q: Suppose that the population standard deviation of student scores is 20. What will be the sample size…

A:

Q: An experiment produces the data sample: 285, 279, 280, 288, 279, 286, 284, 279 whosex…

A:

Q: A random sample of 16 people spent an average of 45 minutes driving to work.   Assume the…

A: 1. The 95% confidence interval for the population mean is (41.08, 48.92)  and it is obtained below:…

Q: None

A: Step 1:ConceptWhen we want to estimate a population proportion with a certain level of confidence,…

Q: If n = 300 and p (p-hat) = 0.8, construct a 99% confidence interval. What is the margin of error?…

A:

Q: Construct a 95% confidence interval for p, - Pɔ. The sample statistics listed below are from…

A:

Q: Assuming that the population is normally distributed, construct a 90% confidence interval for the…

A: To construct 90% confidence interval for the population mean for each of the samples. Confidence…

Q: (b) What is the 95% confidence interval estimate of the population mean examination score if a…

A:

Q: If n=260 and p' (p-prime) = 0.84, construct a 99% confidence interval. Give your answers to three…

A: Given: n =260 p' =0.84 we need 99% confidence interval

Q: If n=340 and p (p-hat) =0.23, find the margin of error at a 95% confidence level Give your answer to…

A: Given,n=340p^=0.23α=1-0.95=0.05α2=0.025Z0.025=1.96

Q: What analysis can be drawn form these 2 T-tests? t test 1: data: netustm by gndr t = -7.207, df =…

A: Given: Two t-tests

Q: If n = 140 and p (p-hat) = 0.8, construct a 95% confidence interval. %3D Give your answers to three…

A: We want to find the 95% CI for population proportion

Q: Find the value of ta/2 and n = 25 for the 90% confidence interval for the mean if the population…

A:

Q: CONFIDENCE INTERVALS FOR THE DIFFERENCE IN 2 POPULATION MEANS Children in two elementary school…

A: We have been given that the confidence interval is (-10, -2) The confidence interval does not…

Q: Indentify the t-score for a 95% confidence interval if the sample size is 50 t=

A: Given n=20 CI=95%

Q: Construct the confidence interval for the population mean u. c=0.98, x = 7.8, 0 =0.5, and n = 53 A…

A: Construct a 98% confidence interval for u is (?,? )

Q: Two different simple random samples are drawn from two different populations. The first sample…

A: Given that :  Two different simple random sample are drawn from two different populations. Let α =…