O B. There is no mode. (c) Determine the mean number of children. The mean number of children is (Round to two decimal places as needed.) Determine the standard deviation number of children. The standard deviation number of children is (Round to two decimal places as needed.) (d) Explain why a large sample size is needed to perform any inference regarding this population. Choose the correct answer below. O A. The standard deviation is less than the mode. O B. The mean number is greater than the standard deviation OC. The data are clearly skewed to the right OD. The data are symmetric. (e) Ten years ago, the ideal number of children was considered to be 2.73. Do the results of this poll indicate that people's beliefs as to the ideal number of children have changed? Use a=0.05. Determine the null and alternative hypotheses. V 2.73 children H 2 73 children Calculate the test statistic. to (Round to two decimal places as needed.) Calculate the P-value. Pvalue O (Round to three decimal places as needed.) State the conclusion for the test

O B. There is no mode. (c) Determine the mean number of children. The mean number of children is (Round to two decimal places as needed.) Determine the standard deviation number of children. The standard deviation number of children is (Round to two decimal places as needed.) (d) Explain why a large sample size is needed to perform any inference regarding this population. Choose the correct answer below. O A. The standard deviation is less than the mode. O B. The mean number is greater than the standard deviation OC. The data are clearly skewed to the right OD. The data are symmetric. (e) Ten years ago, the ideal number of children was considered to be 2.73. Do the results of this poll indicate that people's beliefs as to the ideal number of children have changed? Use a=0.05. Determine the null and alternative hypotheses. V 2.73 children H 2 73 children Calculate the test statistic. to (Round to two decimal places as needed.) Calculate the P-value. Pvalue O (Round to three decimal places as needed.) State the conclusion for the test

Name: This past year, an organization conducted a survey and asked, "What d
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Description: This past year, an organization conducted a survey and asked, "What do you think is the ideal number of children for a family to have?" The results of the survey are shown in the table. Complete parts (a) through (e).E Click the icon to view the dat

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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In the 1992 presidential election, Alaska's 40 election districts averaged 1993 votes per district for President Clinton. The standard deviation was 584. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places. a. What is the distribution of X? X ~ N( b. Is 1993 a population mean or a sample mean? Select an answer v C. Find the probability that a randomly selected district had fewer than 2053 votes for President Clinton. d. Find the probability that a randomly selected district had between 2074 and 2208 votes for President Clinton. e. Find the 95th percentile for votes for President Clinton. Round your answer to the nearest whole number.
Hello, I need help with part e and f. I attached a photo of the data set and questions e and f. I calculated the sample mean in excel and got 60,143. For the sample standard deviation, I got 10,462.38.
Which statement below is correct? a. Standard deviation should be used when calculating z for a single score, while standard error should be used when calculating z for a sample mean. b. When calculating z for a single score or for a sample mean, the standard error should be used. c. Standard error should be used when calculating z for a single score, while standard deviation should be used when calculating z for a sample mean. d. When calculating z for a single score or for a sample mean, the standard deviation should be used.
Consider the given data set. n = 12 measurements: 9, 8, 1, 5, 5, 7, 5, 6, 8, 7, 2, 0 Find the mean. USE SALT Find the standard deviation. (Round your answer to four decimal places.) z = Find the z-score corresponding to the minimum in the data set. (Round your answer to two decimal places.) Find the z-score corresponding to the maximum in the data set. (Round your answer to two decimal places.) z = Do the z-scores indicate that there are possible outliers in the data set? Since the z-score for the larger observation is larger than 2 in absolute value, the larger value is unusually large. Since both z-scores exceed 2 in absolute value, both of the observations are unusual. Since neither z-score exceeds 2 in absolute value, none of the observations are unusually small or large. Since the z-score for the smaller observation is larger than 2 in absolute value, the smaller value is unusually small.
Please find the range, sample standard deviation and inter-quartile range (IQR) of the following data set. 25 37 39 56 61 71 73 73 80 85 range = (Please enter an exact answer.) standard deviation (ss) = (Please show your answer to one decimal place.) IQR = (Please enter an exact answer.)A new number, 180, is added to the data set above. Please find the new range, sample standard deviation and IQR of the new data set.range = (Please enter an exact answer.) standard deviation = (Please show your answer to one decimal place.) IQR = (Please enter an exact answer.)Which measure of spread is less affected by the addition of the extreme observation? Range standard deviation IQR
I need help with this question :) Here are the mean and Standard Deviation for both men and women: Men: Mean 69.0 Standard Deviation: 2.8 Women: Mean 63.6 Standard Deviation: 2.5 Tall Poppies International is a group for vertically gifted individuals (tall people). To join, a man must be at least74 inches tall, and a woman must be at least 70 inches tall.a. What percentage of men are eligible for membership?b. What percentage of women are eligible?c. Are the height requirements fair for men and women?
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The goal of the one-sample t-test is to: Group of answer choices describe the location of a score within a distribution compare the mean of a sample to the population mean. compare the means of two samples. compare the standard deviation of a sample to the standard deviation of the population.
12. Stem and leaf Plot: (Sample )Variable: Gas $ Key: 12 = 1:2 1 : 2 2 : 3 : 4 : 5 : 55 6 : 7 : 88 8 : 9 12a. Use the above Stem and leaf plot and calculate the range. 12b. Use the above Stem and leaf plot and calculate the Quadratic Mean. 12c. Calculate the upper fence. 12d. Estimate the standard deviation.