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Find the probabability a value will be less than 1.65 standard deviations above the mean
A candy confectioner measures the weight of 30 pieces of candy and obtains a mean and standard deviation of 32.5 gms and 2.6 gms, respectively. Construct the 98% confidence interval for the population mean.
Does this sample give sufficient evidence to conclude that self-esteem scores for group-participation adolescents are significantly different from those of general population? Use two-tailed test with α = .01.
a tire manufacturer wants to determine the inner diameter of a certain grade of tire. ideally the diameter would be
How would you find the normal approximation to the binomial probability P(x = 5) in part A? Please show how you would calculate u and standard deviation in the formula for the normal approximation to the binomial
what is the area under the normal curve between z 0.0 and z 1.79?a 0.4633b 0.0367c 0.9599d
the labor bureau wants to estimate at a 98 confidence level the proportion of all households that receive welfare. the
Draw the scatter diagram. Does it appear that x and y are related? If so, how? Test to determine whether there is evidence of a linear relationship
What is the coefficient of correlation? Is it significant at .01? How do you know? How much of the variation in calories can be explained by the number of fat grams per slice?
a researcher believes that the retail price of new identical automobiles differs between an urban location and a
iq is normally distributed with a mean of 100 and a standard deviation of 15. suppose one individual is randomly
Estimate the number of cards in the sample for which Clara correctly guesses the suit by giving the mean of the relevant distribution (that is, the expectation of the relevant random variable). Do not round your response.
Due to financial hardship, the Nyke shoe company feels they only need to make one size of shoes, regardless of gender or height. They have collected data on gender, shoe size, and height
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