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the average public elementary school has 450 students. assume the stand deviation of the distribution is 99. if a random sample of 36 public elementary schools is selected, find the probability that
Suppose you study a random sample of 100 GRE verbal exams. Determine the probability that the average (mean) score in this sample will be between 485 and 515.
The mean tar content of a simple random sample of 25 unfiltered king-size cigarettes is 21.1 mg, with a standard deviation of 3.2 mg. The mean tar content of a simple random sample of 25 filtered 10
A frequency idstribution was developed. The lower endpoint of the first class is 9.30, and the midpoint is 9.35. what is the upper endpoint of this class?
How to calculate: 57%men consider professional baseballplayers. Randomly select10 men, Find the probability of exactly eight, at least eight, and less than eight.
the radar traps at each of the locations L1 L2 L3 L4 are operated 40 30 20 and 30 of the time a person who is speeding on his way to Penn State has a probablities of 2 1 5 and 2 respectivley of pass
Jerry however is unsure the 0.6 probability of a favorable marketing research study is correct. How sensitive is Jerry's decision to this probability value ? how far can this probability value devia
If the rating system had classified the applicant in the reject category, what is the probability that the customer would not default on a loan
A computer is used and it is found that the P-value = 0.0016. What can you state about the sample (independent or dependent) and what can you conclude about the evidence?
The statistical analysis predicted that there would be 104 foxes. Calculate the residual for that data point.
The diameters of peaches in a certain orchard are normally distributed with a mean of 3.85 inches and a standard deviation of 0.42 inches. Show all work.
A sample of 93 golfers showed that their average score on a particular golf course was 89.33 with a standard deviation of 6.43. Answer each of the following (show all workand state the final answer to
what is the probability that among 10 true hypertensives at least 50% are being treated appropriately and are complying with this treatment?
53% of all recorded births are boys if 6 babies born in this hospital are selected at randum find the probability that two of the babies selected are boys.
Five cards are selected at random from a regular deck of cards without replacement. What is the probability that exactly three of them are picture cards (Kings, Queens, or Jacks)? If a hand of 13 ca
Where on the SPSS output would you look to find out if you violated the assumption of sphericity? If the data did violate this assumption, what would the impact be on your analysis?
Suppose that 1% of all the students seeking treatment at the school infirmary have mono. Of the students who do have mono, 90% complain of a sore throat. Of the students who do not have mono, 30% al
The manufacturer considers the bottom 5% of the cats underweight and the top 10% of the cats overweight. Compute the two weights that give the cutoff points for the three categories.
If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours?
A coin was flipped 60 times and came up heads 38 times. (a) At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations. (b) Calculate a p-value and i
What is wrong with gauging stockholder views about employee benefits by mailing a ques- tionnaire that IBM stockholders could complete and mail back?
Gallup Polls When Gallup and other polling organizations conduct polls, they typically con- tact subjects by telephone. In recent years, many subjects refuse to cooperate with the poll. Are the poll
show how you would calculate mean and standard deviation in form for normal approximation to the bin omial and show the final form you would use w/o going through all the calculations
What is the pessimistic strategy for the new product line?
Find a 95% confidence interval for the mean monthly rent for unfurnished one-bedroom apartments available for rent in this community.