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A farmer wants to try a new experimental diet on his hogs. He wants to be 95% confident that the average weight gain will be within 9 pounds. If the standard deviation is 20 pounds, and the weight gain is normally distributed, how many hogs should receive the new experimental diet?
If member of sales force submits the entertainment expense (dinner cost for four) of $190, must this expense be considered unusually high. Calculate and interpret z- score for each of six entertainment expenses.
Chandra has 5 liters of a 24% solution of sodium hydroxide in a container. What is the amount and concentration of sodium hydroxide solution she must add to this in order to end up with 8 liters of 27% solution?
An automobile insurance company estimates the following loss probabilities for the next year on a $25,000 sports car:
The data below are the numbers of hours of homework done as reported by 24 high school juniors for the last week in September 2006.
A research repot from an independent-measures study states that there are significant differences between treatments, F(2, 54) =3.58, p
Any state auto insurance company took a random sample of 370 insurance claims paid out during a 1-year period. the average claim was $750 with a standard deviation of $150. find .99 confidence interval for the mean claim payment.
Assume the probability that a telephone in any given telephone booth is defective is 0.2. Determine the probability that if 8 phone booths are examined, the number of defective phones is exactly 3.
Compute the value of t. What is your decision regarding the null hypothesis?
Assumed to have 20 pounds of carry-on baggage, find the probability that his total is greater than 195 pounds. Round your answer to three decimal places.
Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24-hour period.
Downhill Ski Resort in Colorado has accumulated information from records of the past 30 winters regarding the measurable snowfall. This information is as follows:
Then use ogive to estimate median and first and third quartiles. Also utilize it to reply following question: What percent of 60 mutual fund loads are less than 75.
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