Ages Number of students 15-18 8 19-22 6 23-26 9 27-30 2 31-34 3 35-38 7 Based on the frequency distribution above, find the relative frequency for the class with lower class limit 27 Relative Frequency = % Give your answer as a percent, rounded to one decimal place Question HelpQuestion 17
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| Ages | Number of students |
|---|---|
| 15-18 | 8 |
| 19-22 | 6 |
| 23-26 | 9 |
| 27-30 | 2 |
| 31-34 | 3 |
| 35-38 | 7 |
Based on the frequency distribution above, find the relative frequency for the class with lower class limit 27
Relative Frequency = %
Give your answer as a percent, rounded to one decimal place
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- Isle Royale, an island in Lake Superior, has provided an important study site of wolves and their prey. Of special interest is the study of the number of moose killed by wolves. In the period from 1958 to 1974, there were 296 moose deaths identified as wolf kills. The age distribution of the kills is as follows. Age of Moose in Years Number Killed by Wolves Calf (0.5 yr)1-56-1011-1516-20 1105074575 Consider all ages in a class equal to the class midpoint. Find the expected age of a moose killed by a wolf and the standard deviation of the ages. (Round your answers to two decimal places.)Categorical and Frequency Distributionrandom sample of 16 subjects The ages were: Assuming that age is normally distributed in the population, can we conclude that the mean age of the population is less than 60 years? Let α = 0.05.
- The age of children in kindergarten on the first day of school is uniformly distributed between 4.88 and 5.94 years old. A first time kindergarten child is selected at random. Round answers to 4 decimal places if possible. If such a child is at the 87th percentile, how old is that child? ____ years old.distribution of candidates who were enrolled for the mba entrace exam and the candidates (out of those enrolled) who passed the exam in different institutes CANDIDATES ENROLLED =8550 X-16%, P- 22%, Q-15%, R-10%, S-17%, T-8%, V-12% CANDIDATES PASSED= 5700 X- 12%, P-18%, Q-17%, R-13%, S-16%, T-9%, V-15% a) What percentage of candidates passed the Exam from institute T out of the total number ofcandidates enrolled from the same institute?b) Which institute has the highest percentage of candidates that passed to the candidates enrolled?c) By how many candidates, does the number who passed institutes S and P together exceeds thenumber of candidates enrolled from institutes T and R together?Using 68-95-99.7% rule to indicate quantities In a study of facial behavior, people in the control group are timed for eye contact in a 5-minute period. Their times are normally distributed with a mean of 183.0 seconds and a standard of 55.0 seconds. What percent of times will between 73 and 293 seconds? what percent of times will be over 238 seconds? Suppose that 800 people were assigned to this control group. How many people will be with time over 238?
- .59. Potatoes. A high-quality product is one that is consistent and has very little variability in its characteristics. Controlling variability can be more difficult with agricultural products than with those that are manufactured. The following table gives the weights, in ounces, of the 25 potatoes sold in a 10-pound bag. (a) Summarize the data graphically and numerically. Give reasons for the methods you chose to use in your summaries. (b) Do you think that your numerical summaries do an effective job of describing these data? Why or why not? (c) There appear to be two distinct clusters of weights for these potatoes. Divide the sample into two subsamples based on the clustering. Give the mean and standard deviation for each subsample. Do you think that this way of summarizing these data is better than a numerical summary that uses all the data as a single sample? Give a reason for your answer.A uniform distribution has a minimum of six and a maximum of ten. A sample of 50 is taken.Find the 70th percentile for the sums. (Round your answer to two decimal places.) How is the central limit theorem for sums z-score formula used to find the percentile?RELATIVE FREQUENCY DISTRIBUTION Use percentages to construct the relative frequency distribution corresponding to the accompanying frequency distribution for daily commute time in Boston.
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