You collect data on two independent simple random samples from approximately normal populations. the summary statistics are: n1 = 7, = 7, s1 = 2, n2 = 9, = 4, and s = 1.9. you think the population standard deviations are equal, so you decide to pool the estimates of the population standard deviation of the difference between the means. which of the following gives the correct t statistic for a pooled test of the hypothesis h0 : µ1 − µ2 = 0, and the number of degrees of freedom upon which this is based?

T-statistic = 3.068

Degree of Freedom = 14

Step-by-step explanation:

We are given the following in the question:

Group 1:

Group 2:

First, we design the null and the alternate hypothesis

Since, the population variances are equal and that the two populations are normally distributed, we use t-test(pooled test) for difference of two means.

Formula:

Pooled standard deviation

Putting all the values we get:

the statemwnt is the company makes small and large snow cone cups.

large=it holds more then the small

small=it holds less then the large