Question 13Find the Arithmetic Mean form the following data:Not yetansweredClass IntervalFrequencyMarked out of5 - 9151.0010 – 1430P Flagquestion15 -192220 -243625 – 297О а. 18.92O b. 17.58О с. 16.54O d. 15.56

The class and frequencies are given. This is continuous grouped data. The data has 5 classes. We…

Answered: Find the Arithmetic Mean form the…

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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Question 12: Given the interval estimate for the mean (6.8, 18), the point estimate for the mean is , ? and the margin of error is ?
question 2b. The annual yield (expressed as a percentage) for all investments in a particular asset class in the latest financial year was normally distributed with a mean of 4.5% and a standard deviation of 1.25%.i. Represent the probability that a randomly selected investment in this class will have an annual yield greater than 6.00%on a diagram and determine this probability. ii. Represent the value for annual yield that only 10% of investments in this class exceed on a diagram and determine this value.
7 Consider Figure 29.21. The two tail-ends have equal area. How many standard deviations from the mean must A and B be placed if the tail-ends are (a) 10% (b) 5% (©) 1% of the total area? N(x) A B * Figure 29.21 Graph for Question 7.
Please help me with part d) of the question. d) Show that an alternate formula for a z-interval of the population mean is:
Question 10 Refer to the accompanying table, which describes the number of adults in groups of five who reported sleepwalking. Find the mean and standard deviation for the numbers of sleepwalkers in groups of five.
Suppose that a researcher is interested in differences between young adults and older adults with respect to social media preferences. The researcher asked participants to indicate their preference for a specific social media application by checking all that apply among the following: Twitter, Facebook, and Snapchat. The researcher observes the following: Identify the assumptions of the chi-square test that would be violated if the researcher performed a chi-square test on the frequencies in the table.
QUESTION 6 In a sample of 80 new residents who received a coupon for a two month free membership to a country club, there were 30 people who actually took advantage of the free two month membership. When testing the hypothesis that at least 30% of the people that receive the coupon actually use it, the test statistic is 1.46. What is the p-value? (please round your answer to 4 decimal places)
In the article “The World's Longest Continued Series of Sea Level Observations” (M. Ekman, Paleogeography, 1988:73–77), the mean annual level of land uplift in Stockholm, Sweden, was estimated to be 4.93 ± 0.23 mm for the years 1774–1884 and to be 3.92 ± 0.19 mm for the years 1885–1984. Estimate the difference in the mean annual uplift between these two time periods, and find the uncertainty in the estimate.
Three popular fast-food restaurant franchises specializing in burgers were surveyed to find out the number of calories in their frequently ordered sandwiches. At the α=0.05 level of significance, can it be concluded that a difference in mean number of calories per burger exists? FF #1 FF #2 FF #3 340 740 710 290 540 500 1250 510 410 1010 440 390 390 a.State the null hypotheses H0: u1=u2=u3=u4/ CLAIM OR NOT CLAIM H1: At least one mean is different than the others/ CLAIM OR NOT CLAIM b.Determine the p-valuec. Make the decisionsd. Summarize the results
A sample of observations is found to have a mean = 55 and s= 3.5 Compute the z-score relative to this sample for each of the following three scores
Question 16 Furnace repair bills are normally distributed with a mean of 265 dollars and a standard deviation of 25 dollars. If 100 of these repair bills are randomly selected, find the probability that they have a mean cost between 265 dollars and 267 dollars. Round to four decimal places.
QUESTION 8 Nabisco claims that Chip Ahoy Cookies have an x ̅=28.67 chocolate chips per cookie with a SD=2.67. You randomly select 15 cookies from a new bag and carefully remove all the chocolate chips from each of the 36 cookies. You find the mean of the chocolate chips for the 15 cookies is 24.27 chocolate chips per cookie. Calculate the standard error for the chocolate chips in your experiment. (round to the nearest hundredth).

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Find the Arithmetic Mean form the following data: Class Interval Frequency 5 - 9 15 10 – 14 30 15 -19 20 -24 36 25 - 29 7 O a. 18.92 O b. 17.58 O c. 16.54 O d. 15.56 22