The filling variance for boxes of cereal is designed to be .02 or less. a sample of 41 boxes of cereal shows a sample standard deviation of .16 ounces. use = .05 to determine whether the variance in the cereal box fillings is exceeding the design specification. state the null and alternative hypotheses. 0: 2 a: 2 calculate the value of the test statistic (to 2 decimals). the p-value is what is your conclusion?

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Pam buys a sleeve of ball bearings for her skateboard. each of the bearings is 1 1/5 inches wide. the sleeve is 9 3/5 inches long. how many ball bearings are in the sleeve? show your work.

Rosy waxes 2/3 of her car with 1/4 bottle of car wax.at this rate,what fraction of the bottle of car wax will rosey use to wax her entire car