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Mars, Inc. manufactures M&M's, one of the most popular candy treats in the world. The milk chocolate candies come in a variey of colors including blue, brown, green, orange, red and yellow. The overall proportions for the colors are .24 blue, .13 brown, .20 green, .16 orange, .13 red and .14 yellow. In a sampling study, several bags of M&M mile chocolates were opened and the following color counts were obtained.
BLUE: 105
BROWN: 72
GREEN:89
ORANGE: 84
RED: 70
YELLOW: 80
Use a .05 level of significance and the sample data to test the hypothesis that the overall proportions for the colors are as stated above. What is your conclusion?
Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
A company that produces an expensive stereo component is considering offering a warranty on the component. Suppose the population of lifetimes of the components is a normal distribution with mean of 84 months and standard deviation of 10 months.
At alpha = 0.05, is there enough evidence to conclude that proportions vary from those in the study?
Determine the probability distribution associated with these data.
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a random sample of size 9 is collected from a normally distributed random variable. the sample mean is 6.507 and the
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200 people were surveyed and asked to rate mayor Michael Bloombergs effectiveness towards education. The rate scale is 1 (lowest) to 10 (highest). Mayor Bloomberg's average rating was 7.50, with a standard deviation of 2
The researcher found that Lincoln's educational score did not correlate with the expected variables.
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