A company advertises that its cans of caviar each contain 100 g of their product. A consumer advocacy group doubts this claim, and they obtain a random sample of 8 cans to test if the mean weight is significantly lower than 100 g. They calculate a sample mean weight of 99 g and a sample standard deviation of 0.9 g. The advocacy group wants to use these sample data to conduct a t-test on the mean. Assume that all conditions for inference have been met. Provide the correct test statistic formula for their significance test.

The value of the test statistic is -3.14.

Step-by-step explanation:

Test statistic:

In which X is the sample mean, is the expected value, is the standard deviation and n is the size of the sample.

A company advertises that its cans of caviar each contain 100 g of their product.

This means that

They calculate a sample mean weight of 99 g and a sample standard deviation of 0.9 g. Sample of 8 cans.

This means that

So the test statistic will be given by:

The value of the test statistic is -3.14.

a) 0

step-by-step explanation:

i^413 x i^0 = 0 as any number multiplied by a zero is

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