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The lengths of 45 French fries, randomly selected from a huge shipment, were measured and a mean length of 8.4 cm with standard deviation of 3.1 cm was found.
a. Construct a 95% confidence interval for the population mean length of a French fry.
b. Compute the number of French fries that would have to be sampled and measured to be 98% sure of being within 0.4 cm of the true mean.
It could not do anything with the airport and suffer a loss of revenue. The current value of raised revenue from a new airport is in question.
It is believed that population standard deviation is 15 days. If test is conducted using 0.05 level of significance, what conclusion must be reached?
the maximum point total for the quarter was 200. The point totals for the 10 students are given in the stemplot below. For the density curve displayed below, which of the following is true?
Compute average daily rainfall in the week and for weekends. Get the average of weekdays' rainfalls and average of weekend's rainfalls.
Determine the probability that mean height of random sample of 100 women is greater than 66 inches?
The student body of a large university comprises 60% female students. Elucidate what is the probability that the students in the sample exactly two are female?
Conduct a test to determine whether blood lactate level (y) is linearly related to perceived recovery (x). Use alpha = .05. Find the p-value for testing the hypotheses you gave in the previous problem. Show all decimal places in your answer.
The probability that house sales will increase in the next 6 months is estimated to be 0.25. The probability that the interest rates on housing loans will go up in the same period is estimated to be 0.74. The probability that house sales or intere..
Statistics Questions Set: If the mean number of hours of television watched by teenagers per week is 12 with a standard deviation of 2 hours, what proportion of teenagers watch 16 to 18 hours of TV a week? (Assume a normal distribution.)
Which of the following would be most helpful in assessing the practical significance of a test of hypotheses about a proportion?
Describe what you find then produce an ANOVA for the problem.
Probability of a flush. Poker player holds flush when all 5 cards in hand belong to same suit (clubs, diamonds, hearts, or spades).
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