How many tissues should the Kimberly Clark Corporation package of Kleenex contain? Researchers determined that 60 tissues is the mean number of tissues used during a cold. Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold: = 52, S = 22. Suppose the alternative you wanted to test was H1 : μ < 60. State the correct rejection region for α = 0.05. a. Reject H0 if t > 1.9842 or Z < -1.9842. b. Reject H0 if t < -1.9842. c. Reject H0 if t > 1.6604. d. Reject H0 if t < -1.6604.

d. Reject H0 if t < -1.6604

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that the mean number of tissues used during a cold is significantly less than 60.

Then, the null and alternative hypothesis are:

The significance level is 0.05.

The critical value for a level of significance is α=0.05, a left-tailed test and 99 degrees of freedom is tc=-1.6604.

The decision rule is that if the test statistic is below tc=-1.6604, the null hypothesis is rejected.  

answer: city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

since we have given that

total annual rainfall a city record = 40 inches

this year, total rainfall recorded = 37.6 inches

number of inches of rainfall   is needed to match the record of 40 inches is given by

hence, city needs 2.4 inches of rainfall more to match the record of 40 inches.

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6