10.DETAILSDEVORESTAT9 3.TB.020.If pn= 40 and qn = 20, then what is the shape of the binomial distribution?O normalO positively skewedO negatively skewedO cannot be determined without additional information

Answered: 10. DETAILS DEVORESTAT9 3.TB.020. If pn…

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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5.5.17 diau A binomial experiment is given. Decide whether you can use the normal distribution to approximate the binomial distribution. If you can, find the mean and standard deviation. If you cannot, explain why. A survey of adults found that 419% have used a multivitamin in the past 12 months. You randomly select 50 adults and ask them if they have used a multivitamin in the past 12 months. Select the correct answer below and, if necessary, fill in the answer boxes within choice. your O A. No, because nq <5. O B. No, because np <5. O C. Yes, the mean is and the standard deviation is (Round to two decimal places as needed.) Click to select and enter your-answer(s) and then click Check Answer. All parts showing Clear All Check Answer hp
(ONE WAY ANOVA) Find the ff: a. mean & variance of each sample b. find the grand mean c. find the between & within
For a binomial distribution with p.10 and n = 100, what is the z-score corresponding to X = 16? 06 02 1.6 03
1. A house painter found that it takes 40 minutes on average to paint a roof. Given a standard deviation of this task is 5 minutes and the times for roof painting is normally distributed, what is the probability that on any given day it will take the painter 50 minutes or more to paint a house roof? 2. Which of the following would you not use the normal distribution to approximate the binomial distribution? A. n = 100, p = 0.22 B. n = 100, p = 0.31 C. n = 100, p = 0.1 D. n = 100, p = 0.01 E. n = 100, p = 0.9
Male: 65 75 69 58 83 88 59 80 76 62 93 Female: 65 78 67 78 77 72 98 99 80 76 72 75 Assume both follow a Normal distribution. What can be concluded at the the a = 0.10 level of significance level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer v Select an answer v Select an answer v (please enter a decimal) (Please enter a decimal) H1: Select an answer v Select an answer v Select an answer b. The test statistic ? v = (please show your answer to 3 decimal places.) c. The p-value = (Please show your answer to 4 decimal places.) d. The p-value is ? a e. Based on this, we should Select an answer v the null hypothesis. f. Thus, the final conclusion is that ... O The results are statistically significant at a = 0.10, so there is sufficient evidence to conclude that the mean final exam score for the eleven men that were observed is not the same as the mean final exam score for the twelve women that were…
6.3.10 Question Help Three randomly selected households are surveyed. The numbers of people in the households are 2, 7, and 12. Assume that samples of size n 2 are randomly selected with replacement from the population of 2, 7, and 12. Construct a probability distribution table that describes the sampling distribution of the proportion of even numbers when samples of sizes n 2 are randomly selected. Does the mean of the sample proportions equal the proportion of even numbers in the population? Do the sample proportions target the value of the population proportion? Does the sample proportion make a good estimator of the population proportion? Listed below are the nine possible samples. 2,2 2,7 2,12 7,2 7,7 7,12 12,2 12,7 12,12 Construct the probability distribution table. Sample Proportion Probability Type an integer or fraction.) Enter your answer in the edit fields and then click Check Answer. parts remaining Clear All Check Answer Activate Windows
15. 16. You may need to use the appropriate table in the Appendix of Tables to answer this question. DETAILS DEVORESTAT9 3.TB.014. If pn = 80 and qn = 20, then what is the shape of the binomial distribution? O normal positively skewed O negatively skewed O The shape cannot be determined without more information. DETAILS DEVORESTAT9 3.2.013.MI.SA. This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped par Tutorial Exercise A mail-order company business has six telephone lines. Let X denote the number of lines in use at a specified time. Suppose the pmf of X is as given. X 0 1 2 3 4 5 6
According to the document Current Population Survey, published by the U.S. Census Bureau, 30.4% of U.S. adults 25 years old or older in the year 2012 had a high school degree as their highest educational level. Use the normal approximation to the binomial to approximate the following probabilities. Complete parts (a) through (c). Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. a. If 100 such adults are selected at random determine the probability that the number who have a high school degree as their highest educational level is exactly 30. P(X=30) = (Round to four decimal places as needed.)
A poll of 2,153 randomly selected adults showed that 88% of them own cell phones. The technology display below results from a test of the claim that 90% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.05 significance level to complete parts (a) through (e). Test pf p= 0.9 vs p≠ 0.9 Sample 1 X 1893 N 2,153 Sample p 0.879238 95% CI (0.865474, 0.893002) Z-Value -3.21 P-Value 0.001 Is it a two tailed?Right tailed? Left tailed? What is the test statistic? What is the P-value? What is the null hypothesis and what is concluded about it? What is the final conclusion?
A hospital wants to determine if the type of treatment for pneumonia is a factor in recovery time? The table below shows the number of days to recovery for several randomly selected pneumonia patients that had various types of treatment. A Few Hours in the Hospital Overnight Hospital Stay Sent Home With Medicine 10 8 27 15 12 21 12 17 24 13 10 28 11 12 20 11 12 22 10 18 14 16 12 16 Assume that all distributions are normal, the three population standard deviations are all the same, and the data was collected independently and randomly. Use a level of significance of α=0.05α=0.05.H0: μ1=μ2=μ3H0: μ1=μ2=μ3Ha:Ha: At least two of the means differ from each other. For this study, we should use The test-statistic for this data = (Please show your answer to 4 decimal places.) The p-value for this sample = (Please show your answer to 4 decimal places.)
A poll of 2,049 randomly selected adults showed that 96% of thern own cell phones. The technology display belon results from a test of the claim that 95% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.01 significance level to complete parts (a) through (e). Test of p= 0.95 vs p$0.95 Sample X 1962 2,049 Sample p 0.957540 95% CI Z-Value (0.946066,0.969014) 147 P.Value 0.117 a. ls the test two-tailed, left-tailed, or right-tailed? O Two-tailed test O Left-tailed test O Right tailed test b. What is the test statistic? The test statistic is (Round to two decimal places as needed.) c. What is the P-value? The P-value is (Round to three decimal places as needed.) d. What is the null hypothesis and what do you conclude about it? Identify the null hypothesis. O A. Ho: p< 0.95 O B. Ho: p*0.95 O C. Ho: p> 0.95 O D. Ho: p= 0.95 Choose the correct answer below. O A. Reject the null hypothesis because the P-value is…

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10. DETAILS DEVORESTAT9 3.TB.020. If pn = 40 and qn => 20, then what is the shape of the binomial distribution? O normal O positively skewed O negatively skewed O cannot be determined without additional information