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In establishing warranty on TV sets the manufacturer wants to set the limits so that few will need repair at manufacturer expense. On the other hand, the warranty period must be long enough to make the purchase attractive to the buyer. For a new TV the mean number of months until repairs are needed is 36.84 with a standard deviation of 3.34 months. Where should the warranty limits be set so that only 10% of the TVs need repairs at the manufacturer's expense? (Hint: Assume that the life (time in months until repair) of TV is normally distributed).
Fifty raffle tickets are numbered 1 throughout 50, and one of them is drawn at random. What is the probability that the number is a multiple of 5 or 8? Consider the following "solution": Since 10 tickets bear numbers that are multiples of 5 and 6 ..
Construct a probability for the number of students in the sample who watch soap operas.
CASE STUDY: Are the Fish Safe to Eat? Assessing which Factors affect Mercury Levels in Fish in Maine Lakes.
A test of hypothesis is conducted at the .05 level of significance to test either or not the population correlation is zero.
Draw two pie charts, which allow the total yearly exports to be compared. Explain the trend in the export of fish as shown in the two pie charts.
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
Why is estimating a multiple regression model just as easy as bivariate regression?
The one-sample t statistic has the value t = -1.68. What do we know about the P -value of this test?
What is the appropriate set of hypotheses to test such that a possible outcome of the test would indicate;
Utlizing binomial approximation to normal finding the normal model. A grower claims that only 13 percent of the strawberries he grows are unsatisfactory.
On a particular day during the most recent golf tournament, the organizer placed the whole (pin) in 0 back left corner of the green. 64 golfers played the hole with the new placement on that day. Find out the probability of the sample average numb..
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