Researchers want to use a hypothesis test to test the claim that the proportion of college students that have an Instagram account is more than 85%. They obtained a simple random sample of 463 students and obtained the following results: Has Instagram Account. Frequency Yes 411 No 52 a. Are the researchers testing a claim about a proportion or mean? B.Assume that the requirements needed for the hypothesis test have been met. Write the mathematical expression for the null and alternative hypothesis. C.Use the formula to find the test statistic. Round your answer to two decimal places. D. The researchers found the P-value to be 0.01. Provide a sketch of the density curve that belongs to this P-value. E.Using a 5% level of significance and a P-value of 0.01, do the researchers reject or fail to reject the null hypothesis? Explain your reasoning.
Researchers want to use a hypothesis test to test the claim that the proportion of college students that have an Instagram account is more than 85%. They obtained a simple random sample of 463 students and obtained the following results:
Has Instagram Account. Frequency
Yes 411
No 52
a. Are the researchers testing a claim about a proportion or mean?
B.Assume that the requirements needed for the hypothesis test have been met. Write the mathematical expression for the null and alternative hypothesis.
C.Use the formula to find the test statistic. Round your answer to two decimal places.
D. The researchers found the P-value to be 0.01. Provide a sketch of the density curve that belongs to this P-value.
E.Using a 5% level of significance and a P-value of 0.01, do the researchers reject or fail to reject the null hypothesis? Explain your reasoning.
Step by step
Solved in 7 steps with 1 images
