A courier service company wishes to estimate the proportion of people in various states that will use its services. Suppose the true proportion is 0.07. If 330 are sampled, what is the probability that the sample proportion will differ from the population proportion by greater than 0.037 Round your answer to four decimal places.

Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the standard deviation is 5. What is the probability of selecting a person with a score greater than Cody’s?

You have a uniform distribution whose lowest value is 7 and whose highest value is 15. Find the probability that a randomly selected number from this distribution will be between 9.3 and 10.6.

5: Cal Poly has a vested interest in finding out the level to which its students are content with the various courses offered. They are curious to learn what proportion of students are pleased with the courses they are enrolled in at the moment. The provost believes that 27 % of Cal Poly students are pleased with the courses. A group was asked in front of the library if they were content with the various courses offered. Out of the 113 students asked, 31 students were content with the various courses offered

A quiz consists of 40 multiple choice​ questions, each with five possible​ answers, only one of which is correct. If a student guesses on each​ question, what is the mean and standard deviation of the number of correct​ answers? Round to the nearest thousandth.

The scores on a statewide math exam were normally distributed with ?=74 and ?=8. What proportion of test-takers had a grade between 66 and 88 on the exam?

In a simple random sample of 1200 young​ people, 86​% had earned a high school diploma. What is the standard error for this estimate of the percentage of all young people who earned a high school​ diploma?

The distances golf balls travel under laboratory testing conditions are normally distributed. The mean is 312 yards. The probability the golf ball travels further than 319 yards is 0.28. Find the probability a randomly selected golf ball travels between 305 yards and 319 yards. Express the answer as a decimal value rounded to the nearest hundredth.