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

Find the critical valuez Subscript alpha divided by zα/2that corresponds to the confidence level85​%.

help pleasee thank you! A national organization sets out to investigate the change in prevalence of HIV since the last census in 2010. A total of 100 participants were interviewed and HIV prevalence in the sample is 7.5%. Assume that the data from the 2010 census indicated that the prevalence of HIV in the particular population was 5%. In order to test whether the prevalence of HIV now is significantly different from the HIV prevalence in 2010 at 95% confidence level, can we use a z-test to conduct a hypothesis test? Why? Why not? Group of answer choices Yes, we cannot use a z-test since ??0?0 = 100*0.075*(1-0.075)=6.93 > 5 Yes, we can use a z-test since ??0?0 = 100*0.05*(1-0.05)=4.75 < 5 Yes, we can use a z-test since ??0?0 = 100*0.075*(1-0.075)=6.93 > 5 No, we cannot use a z-test since ??0?0 = 100*0.05*(1-0.05)=4.75 < 5

An article included data from a survey of a random sample of adults living in the United States. Of the 1,300 people who participated in the survey, 700 responded they believe that global climate change is a major threat to the well-being of the United States. USE SALT Use the five-step process for estimation problems (EMC³) to construct a 95% confidence interval for the proportion of adults in the United States who believe that global climate change is a major threat to the well-being of the United States. (Hint: See Example 9.4. Enter your answer using interval notation. Round your numerical values to three decimal places.) 0.556, 0.610 X Interpret the interval. O There is a 95% chance that the mean number of all adults in the United States who believe that global climate change is a major threat to the well-being of the United States is directly in the middle of this confidence interval. O We are 95% confident that the mean number of all adults in the United States who believe that…