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Suppose five 6 oz tubes of toothpaste are randomly selected and squeezed until no more toothpaste will come out. Then each tube is cut open and the amount remaining is weighed, resulting in the following data. 0.53, 0.65, 0.46, 0.5, 0.37. Does it appear that the true average amount left is less than 10% of the advertised contents?
A. Check the validity of any assumptions necessary for testing the appropriate hypotheses.
B. Carry out a test of the appropriate hypotheses using a significance level of 0.05. Would your conclusion change if a significance level of 0.01 had been used?
C. Describe in context type I and type II errors, and say which error might have been made in reaching a conclusion?
A standard slot machine has three reels. The first reel has 3 walnuts, 7 cherries, 3 oranges, 5 lemons, 1 bell, and 1 jackpot bar. The second reel has 7 cherries, 6 oranges, 1 lemon, 3 bells, and 3 bars. The third reel has 4 walnuts, 7 oranges, 5 ..
Collect data for at least 10 days. Do you think the data will provide a valid representation of these activities? Explain why or why not. Future SLP assignments depend on this data and thus this assignment needs to be completed early in the s..
The publisher selects a random sample of 200 subscribers and finds that 116 plan to renew their subscriptions. Use (a=0.01). p = the population of subscribers to Golf Illustrated who renew. Calculate the p-value.
A five-year old study claims that selling prices of new homes / condominiums in the New York area have a normal distribution with mean = $180,000 and standard deviation = $40,000.
in a sample of seven cars each car was tested for nitrogen-oxide emissions in grams per mile and the following results
Describe each of the following methods of statistical inference in detail (Please try to use layman's terms).
if the z-value for a given value x of the random variable x is z 1.96 and the distribution of x is normally
A battery manufacturing plant normally operates two eight-hour shifts per day and 6 days per week. The manufacturer can produce 375 units per hour.
Sample data in a goodness-of-fit test are compared with __________. A. a predetermined or historical standard for the variable being studied
In fiscal 1996, the U.S. Agency for International Development provided 238,300 metric tons of corn soy blend (CSB) for development programs and emergency relief in countries throughout the world.
The number of degrees of freedom associated with the t test, when the data are gathered from a matched pairs experiment with 13 pairs, is:
Kay Manning is a sales manager with two salespeople working for her. The ability of each salesperson to secure new accounts has historically been: Jesse Burkett can generate 4 new accounts per 10 visits to prospects
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