Question

5) Given two populations P1 and P2. The claim is that the mean of P1 is...

5) Given two populations P1 and P2. The claim is that the mean of P1 is less than the
mean of P2. You don’t believe in this claim and so you want to test it. From P1, you take
a random sample of size 50, and you find the sample mean and the sample standard
deviation are 24 and 2, respectively. From P2, you take a random sample of size 36,
and you find the sample mean and the sample standard deviation are 25 and 4,
respectively. Is there enough evidence to support the claim? Justify your answer
completely.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
3). You are given the claim that the mean of a population is not equal to...
3). You are given the claim that the mean of a population is not equal to 24 cm. You don’t believe in this claim and so you want to test it. Suppose that you know the population standard deviation is 4 cm, and the population distribution is approximately normal. To test this claim, you take a random sample as follows X = (20, 23, 22, 24, 24, 24, 25, 26, 24, 23, 27, 24, 29, 20, 25, 26, 28). Is...
1. Consider this hypothesis test: H0: p1 - p2 = 0 Ha: p1 - p2 >...
1. Consider this hypothesis test: H0: p1 - p2 = 0 Ha: p1 - p2 > 0 Here p1 is the population proportion of “yes” of Population 1 and p2 is the population proportion of “yes” of Population 2. Use the statistics data from a simple random sample of each of the two populations to complete the following: (8 points) Population 1 Population 2 Sample Size (n) 400 600 Number of “yes” 300 426 Compute the test statistic z. What...
You wish to test the following claim (H1) at a significance level of α=0.05.       Ho:p1=p2       H1:p1>p2...
You wish to test the following claim (H1) at a significance level of α=0.05.       Ho:p1=p2       H1:p1>p2 You obtain 43.1% successes in a sample of size n1=800from the first population. You obtain 33.1% successes in a sample of size n2=236 from the second population. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is......
You wish to test the following claim (H1) at a significance level of α=0.002.       Ho:p1=p2       H1:p1>p2...
You wish to test the following claim (H1) at a significance level of α=0.002.       Ho:p1=p2       H1:p1>p2 You obtain 400 successes in a sample of size n1=518 from the first population. You obtain 289 successes in a sample of size n2=399 from the second population. For this test, you should NOT use the continuity correction, and you should use the normal distribution as an approximation for the binomial distribution. What is the critical value for this test? (Report answer accurate to...
You wish to test the following claim (H1H1) at a significance level of α=0.005α=0.005.       Ho:p1=p2       H1:p1>p2...
You wish to test the following claim (H1H1) at a significance level of α=0.005α=0.005.       Ho:p1=p2       H1:p1>p2 You obtain a sample from the first population with 334 successes and 359 failures. You obtain a sample from the second population with 240 successes and 359 failures. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value...
You wish to test the following claim (H1H1) at a significance level of α=0.001α=0.001.       Ho:μ1=μ2Ho:μ1=μ2       H1:μ1>μ2H1:μ1>μ2...
You wish to test the following claim (H1H1) at a significance level of α=0.001α=0.001.       Ho:μ1=μ2Ho:μ1=μ2       H1:μ1>μ2H1:μ1>μ2 You believe both populations are normally distributed, but you do not know the standard deviations for either. However, you also have no reason to believe the variances of the two populations are not equal. You obtain a sample of size n1=24n1=24 with a mean of M1=68.9M1=68.9 and a standard deviation of SD1=8.6SD1=8.6 from the first population. You obtain a sample of size n2=24n2=24 with...
You wish to test the following claim ( H a ) at a significance level of...
You wish to test the following claim ( H a ) at a significance level of ? = 0.002 . H o : ? 1 = ? 2 H a : ? 1 ? ? 2 You believe both populations are normally distributed, but you do not know the standard deviations for either. And you have no reason to believe the variances of the two populations are equal You obtain a sample of size n 1 = 17 with a...
1. Construct a confidence interval for p1-p2 at the given level of confidence. Group 1 X1=...
1. Construct a confidence interval for p1-p2 at the given level of confidence. Group 1 X1= 110 N1 = 250 Group 2 X2=134 N2 = 298      Alpha = 95% Confidence Interval p1-p2 = (_____, _____) 2.A sample size n = 50 is drawn from a normal population whose standard deviation = 3.8. The sample mean = 20.41. Construct a 95% confidence interval for mean
Independent random samples, each containing 500 observations, were selected from two binomial populations. The samples from...
Independent random samples, each containing 500 observations, were selected from two binomial populations. The samples from populations 1 and 2 produced 388 and 188 successes, respectively. (a) Test H0:(p1−p2)=0 against Ha:(p1−p2)≠0. Use α=0.04 test statistic = rejection region |z|> The final conclusion is A. There is not sufficient evidence to reject the null hypothesis that (p1−p2)=0.   B. We can reject the null hypothesis that (p1−p2)=0 and support that (p1−p2)≠0. (b) Test H0:(p1−p2)≤0 against Ha:(p1−p2)>0. Use α=0.03 test statistic = rejection...
You wish to test the following claim (Ha) at a significance level of α=0.05. Ho:μ1=μ2 Ha:μ1<μ2...
You wish to test the following claim (Ha) at a significance level of α=0.05. Ho:μ1=μ2 Ha:μ1<μ2 You believe both populations are normally distributed, but you do not know the standard deviations for either. And you have no reason to believe the variances of the two populations are equal You obtain a sample of size n1=28 with a mean of ¯x1=67.6 and a standard deviation of s1=10.7 from the first population. You obtain a sample of size n2=24 with a mean...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT