What is the p-value? Note: Use the six-step hypothesis-testing procedure to solve the following exercises. 3. Gibbs Baby Food Company wishes to compare the weight gain of infants using its brand...

Extracted text: What is the p-value? Note: Use the six-step hypothesis-testing procedure to solve the following exercises. 3. Gibbs Baby Food Company wishes to compare the weight gain of infants using its brand versus its competitor's. A sample of 40 babies using the Gibbs products re vealed a mean weight gain of 7.6 pounds in the first three months after birth, For the Gibbs brand, the population standard deviation of the sample is 2.3 pounds Scanned with CamScanner CHAPTER 11 sample of 55 bables using the competltor's brand revealed a mean Increase in weight of 8.1 pounds. The populatlon standard dlevlatlon Is 2.9 pounds. At the .05 significance level, can we conclude that bables using the Gibbs brand gained Jess weight? Compute the p-value and Interpret it.