stated here are some claims or research hypotheses that are

stated here are some claims or research hypotheses that are to be sbstantiated by sample data. In each case, identify the null hypothesis and the alternative hypothesis in terms of the populatin mean. (a.) The mean time a health insurance company takes to pay claims is less than 14 working days. (b) The averae persosn watching a moviet a local multiplex theater spends over $6.50 on refreshments. (c) The mean hospital billl for a birth in the city is less than $7000. (D) The mean time between purchases of a brand of mouthwash by loyal customers is different from 60 days.

Solution

a)

Ho : miu <14

H1 : miu >= 14

b)

Ho : miu > 6.50

H1 : miu <= 6.50

c)

Ho: miu < 7000

H1 : miu >= 7000

d)

Ho : miu = 60

H1 : miu different 60