Statistics- Gibbs Baby Food Company wishes to compare the weight gain

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.

State the decision rule for 0.05 significance level : H₀: μ_G ≥ μ_C ; H₁: μ_G < μ_C. (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places.)

Compute the value of the test statistic. (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places.)

(Click to select)RejectFail to reject

H₀. Babies using the Gibbs brand

(Click to select)gained lessgained at least as much

weight.