# Math 2311 - Uh

MATH 2311 Test 3 Additional Review A simple random sample of 10 students was selected to determine their commuting distance. The results are as follows: 35 23 12 25 30 19 22 31 27 24 Determine the 95% confidence interval for

the true population mean. A simple random sample of 1000 students was selected to determine if they worked full-time while attending college full-time. Of the 1000 students 722 reported working full time. Determine the 90% confidence interval for the population proportion.

If the p-value in is larger than the confidence level, the researcher should (a) Accept the H o, (b) Reject the Ho, (c) Fail to Reject the Ho, (d) Accept the Ha You have created a confidence interval. When repeating the study, the width of the

confidence interval has decreased. Which of the following may be also true: The confidence level has decreased. The sample size has decreased. The sample parameter has increased The margin of error has decreased. The standard deviation or standard error has increased.

A population has a standard deviation of 0.03. You are selecting a sample to find the population mean with a confidence level of 95%. How large of a population should you select if you want a margin of error less than 0.004? You run an experiment to test where Ho: = 0.34 and Ha: .34. The value of your test

statistic is z = 1.54. Determine the p-value. A cereal company claims that their marshmallow cereal contains the following shapes: An actual box of cereal contained the following

pieces: Determine the test type and the test statistic for A prep school claims that 85% of their graduates are accepted to Ivy League schools. You believe that the proportion is less than that. To investigate, you find an SRS of 350 of

their graduates and discover that 265 of them were accepted into Ivy League schools. We will test the claim at a 2% significance level. State the null and alternate hypothesis: A prep school claims that 85% of their graduates are accepted to Ivy League schools. You believe that the proportion is less than

that. To investigate, you find an SRS of 350 of their graduates and discover that 265 of them were accepted into Ivy League schools. We will test the claim at a 2% significance level. Sketch and state the rejection region. A prep school claims that 85% of their graduates are accepted to Ivy League schools.

You believe that the proportion is less than that. To investigate, you find an SRS of 350 of their graduates and discover that 265 of them were accepted into Ivy League schools. We will test the claim at a 2% significance level. Calculate the test statistic. A prep school claims that 85% of their

graduates are accepted to Ivy League schools. You believe that the proportion is less than that. To investigate, you find an SRS of 350 of their graduates and discover that 265 of them were accepted into Ivy League schools. We will test the claim at a 2% significance level. Determine the p-value for your test.

A prep school claims that 85% of their graduates are accepted to Ivy League schools. You believe that the proportion is less than that. To investigate, you find an SRS of 350 of their graduates and discover that 265 of them were accepted into Ivy League schools. We will test the claim at a 2% significance level. State your conclusion.

A study shows that a family of four, on average, spends \$255 per week on groceries. You believe that this amount is incorrect. To test your hypothesis, you select 35 local families of four and calculate their average grocery budget to be \$295 with a standard deviation of \$12.3 Test this claim using a significance level of 5%.

State your null and alternate hypothesis A study shows that a family of four, on average, spends \$255 per week on groceries. You believe that this amount is incorrect. To test your hypothesis, you select 35 local families of four and calculate their average grocery budget to be \$295 with a standard deviation of \$12.3

Test this claim using a significance level of 5%. Sketch and state the rejection region. A study shows that a family of four, on average, spends \$255 per week on groceries. You believe that this amount is incorrect. To test your hypothesis, you select 35 local families of four and calculate their average grocery budget

to be \$295 with a standard deviation of \$12.3 Test this claim using a significance level of 5%. Calculate your test statistic. A study shows that a family of four, on average, spends \$255 per week on groceries. You believe that this amount is incorrect. To test your hypothesis, you select 35 local families of

four and calculate their average grocery budget to be \$295 with a standard deviation of \$12.3 Test this claim using a significance level of 5%. Calculate your p-value. A study shows that a family of four, on average, spends \$255 per week on groceries. You believe that this amount is incorrect. To test

your hypothesis, you select 35 local families of four and calculate their average grocery budget to be \$295 with a standard deviation of \$12.3 Test this claim using a significance level of 5%. Draw your conclusion.

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