The local grocery store sells potatoes in 5 pound bags. Because potatoes come in
ID: 2978605 • Letter: T
Question
The local grocery store sells potatoes in 5 pound bags. Because potatoes come in unpredictable sizes, it is almost impossible to get the bag that weighs exactly 5 pounds. therefore, the store advertises that the bags weigh an average of 5 pounds. To check this claim, a sample of n=25 bags was randomly selected. The average weight for the sample was 5.20 pounds, and the standard deviation for sample was S=0.50. Based on this sample, can you conclude that the average weight for a bag of potatoes is significantly different than u=5lbs? use a=.05. a. state the null and alternative hypothesis in mathematical terms. b. will the test be one tailed or two tailed? c. sketch the distribution and shade the rejection region (s). d. find the t-crit. in the t-table. positive or negative or both. d. conduct the appropriate hypothesis test, and decide whether or not to reject null hypothesis.Explanation / Answer
FOLLOW THIS SOLVED EXAMPLE What is Hypothesis Testing? A researcher uses hypothesis testing to support beliefs about comparisons (i.e., variables or groups). Basically, it is how we empirically test our research hypotheses for "accuracy." We NEVER prove beyond the shadow of a doubt that a comparison is true. Rather, we conclude that, based on some collected data and assumptions, the probability of the comparison being true is very high (i.e., around 95
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