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After 6 quizzes you have a mean score of 50(out of a possible 70). If 60 on next quiz what new mean?
What is the maximun mean score that you could have after the next quiz? What is the minimum mean score that you could have afterthe next quiz?
If you select a random sample of 100 sessions, what is the probability that the sample mean is between 7.8 and 8.2 minutes?
a salesperson either makes a sale s or does not make a sale n with each of two potential customers. the simple events
A Patent Medicine Company supervisor assumes that the bottling machine is operating properly if only 5 percent of the processed bottles are not full. A random sample of 100 bottles had 7 bottles that weren't full. Using a significance level of .01..
in a city in italy 30 of the families have a mastercard 20 have amex 25 visa 8 mc amp amex 12 visamc 6 have amex amp
The repair fails in 14%, and both infection and failure occur together in 1%. What percent of these operations succeed and are free from infection?
car manufacturers advertise gas consumption for new cars. standards require mileage estimates to be within a plus or
Hypothesis Testing: We wish to test the claim that the mean body mass index (BMI) of men is equal to the mean BMI of women. Use the data to the right to test this claim.
A building contractor pays $500 to bid on a contract. If he gets the contract, the probability of which he estimates to be 0.70, he will make a profit of $50,000.
How large a sample should she check in order to be 90% confident that the true proportion is estimated to within 1.5%?
A researcher claims the average American drinks 52 gallons of cola per year with a population standard deviation of 2.0 gallons. We sample 25 random people and find the mean yearly consumption was 49 gallons.
suppose you as manager of texas steak house have started a training program for your employees with 2 goals one is to
The producers of a new toothpaste claim that it prevents more cavities than other brands of toothepaste. A random of 60 people used the new toothpaste for 6 months.
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