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The publisher of Celebrity Living claims that the mean sales for personality magazines that feature people such as Angelina Jolie or Paris Hilton are 1.5 million copies per week. A sample of 10 comparable titles shows a mean weekly sales last week of 1.3 million copies with a standard deviation of 0.9 million million copies. Does this data contradict the publisher's claim? Use a 0.01 significance level. Show all work.
Develop a spreadsheet model to determine the optimal number of magazines to order each day. Use 500 replications and round the demand values generated by the normal random number generator (RNG) to the closest integer value.
Critically discuss the lower control limit for a proportion defective if the average daily production is 5000 units and the average fraction defective is .02?
An assembly line turns out 10% deffectives. Determine an acceptance number and sampling plan for samples of size 14 and a producers risk of 3%. (AQL = 10)).
Estimate the probability the store will gross over $850 a) At least 3 out of 5 business days.
A Tire company has developed a new type of tire. Extensive testing shows that the number of miles the new tire will run before wearing out is normally distrubuted with a mean of 40,000 miles and a standard deviation of 4,000 miles
Using a critical value, test hypothesis at the 1% level of significance.
The overall model statistically adequate at a 0.05 level of significance for predicting sale price(y)? For a moving average which is not true?
Compute the coefficient of determination, r 2 , and interpret its meaning.
We want to show that a real number, chosen at random from the interval [0,1], can be approximated to within 1/(n²) by rational numbers of the form k/n.
The shell thicknesses of the eggs produced by a large flock of hens follow approximately a normal distribution with mean equal to 0.38 mm and standard deviation equal to 0.03 mm. Find the 95th percentile of the thickness distribution.
Use this information to construct a probability table, and then calculate each of the following probabilities: P(foreign car)
Test hypothesis that mean weight of 2 sheets are equal against alternative that they are not(suppose equal variances). Use α=0.05 and suppose equal variances. Determine the P value.
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