he number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. Approximately what percent of bags contain between 69 and 73 potato chips? (1 point)Approximately 68%Approximately 71%Approximately 95%Approximately 99.7%

In a normal distribution, what percentage of data lies within one standard deviation of the mean? Group of answer choicesApproximately 95%Approximately 99.7%Exactly 100%Approximately 68%

In a normal distribution, how much of the data falls within one standard deviation?99.7%95%100%68%

n the normal distribution, approximately what percentage of test scores will fall between 2 and 3 standard deviations above the mean?a.2.1%b.34.1%c.13.6%d.68%

A representative of a consumer advocacy group randomly selects 50 bags of a certain brand of chips and determines the net weight of each. He finds the mean of these selected bags to be 395 grams and the standard deviation to be 6.8 grams. Calculate a 90% confidence interval for the true mean of weight of chips. What is the lower limit of the interval?

Suppose the scores on an exam are normally distributed with a mean μ = 75 points, and standard deviation σ = 8 points.The instructor wanted to "pass" anyone who scored above 69. What proportion of exams will have passing scores? 0.1587 0.75 0.2266 0.7734 −0.75