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In Sunday's Indianapolis Star, there was an artcle talking about all the new grocery stroes opening in Indy. One of the reasons that Indianapolis is so competivtive is because of the amount we spend on groceries and our increased demand for healthy foods. According to the marketing reasearch frms study, the typical grocery shopper spends an average of $139.62 per week. 28 people and a standard deviation of $27.3
A-90% cofidence interval for the true amount spent
B-Another chain claims $140 a week is spend, can they make that claim? Why or why not?
C-Wants the average to be within $5 at the 90% level. What size of a sample would he have to collect to do the study?
a coin is known to be either fair corresponding to the null hypothesis h0 p12 or has heads on both sides corresponding
Normal approximation to the Binomial distribution - Evaluate the probability that at least 195 of the students are female.
Twenty times they sold 6 cars, they never sold 7 cars, three times they sold 8 cars and one time they sold 9 cars. Find the probability that at most 4 cars were sold in a week.
Compare and contrast the characteristics of parametric and non-parametric test methodologies. Give examples of when to use each.
statistical abstracts 117th edition reports that the average amount spent annually for food by householders under 25
Time closely follows a normal distribution with a mean of 500 seconds and a standard deviation of 72 seconds. What percent of kiosk users take between 600 and 720 seconds?
the fill volume of an automated filling machine used for filling cans of carbonated beverage is normally distributed
What is the relationship between a confidence interval and a single sample, two-tailed hypothesis test? How are they the same? How are they different?
A pharmaceutical firm as a sales rep
Is sample of 25 papers large adequate to give a good estimate of mean score of all 42,000 students on this exam problem? Explain your answer.
For the equation: x = e^-pt (C_1e^qt + C_2e^-qt), where C1 and C2 are arbitrary constants, if I let F = C1 + C2 and G = C1 - C2, how do I obtain:
he number of reservations for its January flight to Germany, 305 reservations for tourist class,185 Economy class, and 206 first class. To fill all the seats how many of each kind of plane should the company fly?
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