A population of values has a normal distribution with u = 91.7 and o = 63.3. You intend to draw arandom sample of size n = 27.Find the probability that a sample of size n = 27 is randomly selected with a mean less than 110.P(M < 110) =Enter your answers as numbers accurate to 4 decimal places. Answers obtained using exact z-scores or Z-scores rounded to 3 decimal places are accepted.Submit QuestionChpCe%2434578.9.eyd

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Answered: A population of values has a hort dist…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Find the 95% confidence interval for the population mean if the sample is × = 70.4 and the sample size is n = 24. Assume that the population is normally distributed and the sample standard deviation is 0 = 5. Left Left: Right:
← F2 Researchers conducted a study to determine whether magnets are effective in treating back pain. The results are shown in the table for the treatment (with magnets) group and the sham (or placebo) group. The results are a measure of reduction in back pain. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. S a. Use a 0.05 significance level to test the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment. What are the null and alternative hypotheses? w an example OC. Ho: H₁ H₂ H₁: Hy H₂ The test statistic, t, is 0.15. (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.) 7 W X H 3 Get more help. 80 F3 E D C $ 4 Q F4 R F % 5 V F5 T G 6 B MacBook Air F6 Y H & 7 N F7 U J OB. Ho:
The number of ants per acre in the forest is normally distributed with mean 45,000 and standard deviation 12,005. Let X = number of ants in a randomly selected acre of the forest. Round all answers to 4 decimal places where possible. please answer all 3 subs B, C, and D round all answers to 4 decimal place where possible thank youb. Find the probability that a randomly selected acre in the forest has fewer than 54,589 ants. c. Find the probability that a randomly selected acre has between 48,168 and 56,283 ants. d. Find the first quartile. ants (round your answer to a whole number)
Calculate the mean and standard deviation of a binomial random variable with n = 650 and p = 0.25. Enter the exact answer for the mean, and round your answer for the standard deviation to three decimal places. = Click if vou wOuld like to Show Work for this question: Onen Show Work
Los Angeles workers have an average commute of 31 minutes. Suppose the LA commute time is normally distributed with a standard deviation of 13 minutes. Let X represent the commute time for a randomly selected LA worker. Round all answers to 4 decimal places where possible.a. Find the probability that a randomly selected LA worker has a commute that is longer than 27 minutes. b. Find the 70th percentile for the commute time of LA workers. minutes
Assume that the readings at freezing on a bundle of thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested. Find P9, the 69-percentile. This is the temperature reading separating the bottom 69% from the top 31%. P69 %3D
The weights of cans of Ocean brand tuna are supposed to have a net weight of 6 ounces. The manufacturer tells you that the net weight is actually a Normal random variable with a mean of 5.95 ounces and a standard deviation of 0.2 ounces. Suppose that you draw a random sample of 42 cans. Parti) Suppose the number of cans drawn is doubled. How will the standard deviation sample mean weight change? A. It will decrease by a factor of √2. B. It will increase by a factor of √2. C. It will increase by a factor of 2. D. It will decrease by a factor of 2. E. It will remain unchanged. Part ii) Suppose the number of cans drawn is doubled. How will the mean of the sample mean weight change? ▸ A. It will increase by a factor of √2. B. It will decrease by a factor of 2. C. It will increase by a factor of 2. D. It will decrease by a factor of √2. E. It will remain unchanged. Part iii) Consider the statement: The distribution of the mean weight of the sampled cans of Ocean brand tuna is Normal." A. It…
Many college and university students obtain summer jobs. A professor wanted to determine whether students in different degree programs earn different amounts. She randomly selected five students in each of the 4 university programs and asked them to report what they earned the previous summer (in thousands of dollars). The following partially filled-in ANOVA table was obtained. Fill-in the rest of the table. (Use exact values for df and round all other numbers to 2 decimal places, if needed.) Source df SS MS F-Stat Treatments 11.0 Error Total 23.7
2p please answer the questions in a ABCD form THANK YOU FOR YOUR HELP!!
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A random sample of 300 Italians found that 71.3% eat pasta at least twice a week. Build a 85% CI for the proportion of Italians who eat pasta at least twice a week. a. First, confirm that there are at least 5 successes and 5 failures: There are successes and failures. b. Enter your Cl answer like this: (min,max). Round to three decimals. Be sure to include the parentheses or you will be marked wrong. Submit Question
Arandom sample of 15 individuals representing three different types of music has been observed for the frequency with which they listen to that music over the month. Fill in the ANOVA table. Be sure to round to the second decimal.

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