Mathematics, 06.05.2020 05:07, cfnewton09
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 revealed 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. A sample of 55 babies using the competitor's brand revealed a mean increase in weight of 8.1 pounds. The population standard deviation is 2.9 pounds.
a. Value of the test statistic
b. Compute the p-value. (Round your answer to 4 decimal places.)
c. p-value is
Answers: 3
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