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Bags of a certain brand of tortilla chips claim to have a net weight of 16 ounces. Net weights actually vary slightly from bag to bag and are Normally distributed with mean μ. A representative of a consumer advocate group wishes to see if there is any evidence that the mean net weight is less than advertised and so intends to test the hypotheses H0: μ = 16, Ha: μ < 16. To do this, he selects 24 bags of this brand at random and determines the net weight of each. He finds the sample mean to be = 15.68 and the sample standard deviation to be s = 0.64. Based on these data, we would reject H0 at significance level 0.10 but not at 0.05. we would reject H0 at significance level 0.05 but not at 0.025. we would reject H0 at significance level 0.025 but not at 0.01 we would reject H0 at significance level 0.01
the distribution of the annual incomes of a group of middle management employees approximated a normal distribution
the average annual miles driven per vehicle in the united states is 11.1 thousand miles with ? ? 600 miles. suppose
Assume that customers enter a store at the rate of 60 persons per hour. a) what is the probability that during 5 minutes interval no one will enter the store?
calls to a telephone system follow a poisson distribution with a mean of five calls per minute.a what is the name
At least half the patients are under 15 years old? First, explain how this can be modeled as a binomial distribution with 8 trials, where success is visitor age is under 15 years old and the probability of success is 20%.
are your finances buying habits medical records and phone calls really private? a real concern for many adults is that
In the design of the robot to insert the small cylindrical part into a close-fitting circular hole, the robot arm must exert a 90-n force p on the part parallel to the axis of the hole as shown. Determine the components of the force which the part..
John Rengel is the Quality Assurance Supervisor for Vino Supremo Vinyards. He knows that 10 percent of each box of corks is undersized.
dr. henry believes that if he gives a short quiz 0-5before he lectures and then the same short quiz 0-5after he
The test scores of 6 randomly picked students and the numbers of hours they prepared are as follows: The equation of the regression line is y(^on top)=1.06604x+67.3491. Find the coefficient of determination.
Mr. James McWhinney, President of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales.
An experiment consists of making 80 telephone calls in order to sell a particular insurance policy.
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