The test statistic of zequalsnegative 2.44 is obtained when testing the claim that pequals2 divided by 3. a. using a significance level of alphaequals0.10, find the critical value(s). b. should we reject upper h 0 or should we fail to reject upper h 0?

Step-by-step explanation:

Given that The test statistic of zequalsnegative 2.44 is obtained when testing the claim that pequals2 divided by 3

Hypothesis is

H0:p = 2/3

Ha:p not equals 2/3

(Two tailed test for proportions)

Alpha =0.10

For 90% confidence level Z critical = ±1.645

Test statistic = -2.44

This lies outside (-1.645, 1.645)

Hence reject null hypothesis

b) We should reject null hypothesis.

c

step-by-step explanation:

it isn't d, because the interquartile range is from 27-57. and the interquartile range is basically half the data, it's pretty obvious.

it isn't b, because like i said earlier, the interquartile range is from 27-57. 57-27 is 30. the real range has to be longer

not a either. although it looks like it, 3/4 of the data is not greater than 27. but if c is wrong than this should be correct

the correct answer is c, because 13 is the point in which the plot starts