Classes1011136813910613149710812101210101087121210101210121110712612131210111011101115812911119899171081298121191011912101114881481231188111210881011711111291011913127121013USE EXCEL with explanation please A statistics professor is in the process of investigating how many classes universitystudents miss each semester. To help answer this question, she took a random sample of 100university students and asked each to report how many classes he or she had missed in the previoussemester. Estimate the mean number of classes missed by all students at the university. Use a 99%confidence level and assume that the population standard deviation is known to be 2.2 classes.

Answered: Classes 10 11 13 6 8 13 9 10 6 13 14 9…

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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1
Refer to the accompanying data set and construct a 95% confidence interval estimate of the mean pulse rate of adult females; then do the same for adult males. Compare the results. E Click the icon to view the pulse rates for adult females and adult males. Construct a 95% confidence interval of the mean pulse rate for adult females. bpm< μ < | bpm (Round to one decimal place as needed.) Construct a 95% confidence interval of the mean pulse rate for adult males. bpm< μ < bpm (Round to one decimal place as needed.) Compare the results. O A. The confidence intervals do not overlap, so it appears that there is no significant difference in mean pulse rates between adult females and adult males. O B. The confidence intervals overlap, so it appears that there is no significant difference in mean pulse rates between adult females and adult males. O C. The confidence intervals do not overlap, so it appears that adult females have a significantly higher mean pulse rate than adult males. O D. The…
(b-2) Is the nonlinear model significant? O Yes O No (c-1) Report the p-values for both Years and YearsSq. (Leave no cells blank - be certain to enter "0" wherever required.) Years YearsSq p-values (c-2) Are these variables significant predictors? Use a = .10. O Yes No
42. FILE Car_Price. The accompanying table shows a portion of data consisting of the selling price, the age, and the mileage for 20 used sedans. Mileage 61485 54344 Price 13590 13775 ⠀ 11988 Age 6 6 ⠀ 8 42408 a. Construct a scatterplot of Price against Age. Describe the relationship. b. Construct a scatterplot of Price against Mileage. Describe the relationship. c. Convert Mileage into a categorical variable, Mileage_Category, by assigning all cars with less than 50,000 miles to the "Low_Mileage" category page 68 and the rest to the "High_Mileage" category. How many cars are in the "High_Mileage" category? d. Construct a scatterplot using Price, Age, and Mileage Category. Use different colors or symbols to show cars that belong to the different mileage categories. Describe the relationships between price, age, and mileage of these used sedans. Does the relationship between price and age hold true for both mileage categories? :
Determine a number of years for length of reign such that half of these 40 rulers reigned more years than that number and half reigned less years than that number.
Eight golfers were asked to submit their latest scores on their favorite golf course. These golfers were each given a set of newly designed clubs. After playing with the new clubs for a few months, the golfers were again asked to submit their latest scores on the same golf courses. The results are summarized below: golfers 1 2 3 4 5 6 7 8 own clubs 77 80 69 73 73 72 75 77 new clubs 72 81 68 73 75 70 73 75 a. Compute ?̅and ??b. Give a point estimate for ?? = ?1 − ?2c. Construct the 99% confidence interval for ?? = ?1 − ?2d. Test at the 1% level of significance, the hypothesis that on average golf scores are lower with the new clubs.
A statistics student surveyed a sample of 36 high school students and asked, "How many days in the past week have you consumed an alcoholic beverage?" The results of the survey are shown to the right. Use these results to answer parts (a) through (d). 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 3 ..... (a) Is this data discrete or continuous? A. Discrete, because the data are countable B. Continuous, because the data are not countable C. Continuous, because the data are countable D. Discrete, because the data are not countable (b) Draw a histogram of the data and describe its shape. Choose the histogram below that correctly depicts the given data. A. В. С. D. 20- 20- 15- 10- 20- 15- 10- 20- 15- 10- 15- 10- 5- 5- 0-TTITT> 0 123 45 Number of Days 5- 5- 0- 0 123 45 Number of Days 0 123 45 Number of Days 0 12345 Number of Days Describe the shape of the distribution. Choose the correct answer below. A. The distribution is symmetric and bell-shaped. B. The distribution is skewed left. Frequency Frequency…
Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes, and results are given for Friday the 6th and Friday the 13th in the same month. Use the Wilcoxon signed-ranks test to test the claim that the matched pairs have differences that come from a population with median equal to zero at a significance level of alpha = 0.05. What is the conclusion for this hypothesis test? Fri. 6th Fri. 13th 14 10 10 14 6 7 12 10 7 13 12 13 15Wilcoxon CritT.pdf O A. Reject HO. There is insufficient evidence to warrant rejection of the claim of no difference. OB. Reject HO. There is sufficient evidence to warrant rejection of the claim of no difference. OC. Fail to reject HO. There is sufficient evidence to warrant rejection of the claim of no difference. D. Fail to reject HO. There is insufficient evidence to warrant rejection of the claim of no difference.
Continue from the previous question: Two major automobile manufacturers have produced compact cars with engines of the same size. We are interested in determining whether or not there is a significant difference in the mean MPG (miles per gallon) when testing for the fuel efficiency of these two brands of automobiles. The test statistic is 3.465 2.616 3.906 2.096
Question 14 (Mandatory) (3.5 points) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 14 4 13 1 2 15 11 8 0 15 7 4 14 2 13 1 10 3 10 6 6 12 5 9 0 7 12 11 9 5 3 8 S1 2 4 1 14 8 13 6 2 11 15 12 9 7 3 10 5 0 3 15 12 8 2 4 9 1 7 5 11 3 14 10 0 6 13 (Show your work.) Given above S1-box from DES. Suppose 101101 is fed into S1. The resulting 4 bit string is a) 1000 b) 0111 c) 0101 d) 0001 Previous Page Next Page Page 14 of 30
C. 11 10
Price SqFt 600000 2767 545000 2731 314900 2051 419000 2084 365000 2270 479000 1950 323000 1235 339900 2116 399000 1644 552000 2415 223017 1375 315777 1529 499000 2223 575000 2327 342000 1879 375000 1558 349000 2012 485000 1200 549888 1410 295000 1943 399000 1827 306999 1840 265200 1636 479000 2357 249700 1152 539500 2650 365000 2154 295900 1279 499000 2156 526000 2493 514900 2390 346000 1347 460000 2120 389000 1917 499000 1200 405000 2643 389900 1789 545000 2327 339000 1742 425000 1746 479000 1421 392000 2569 Interpret b0 in the context of this problem. Interpret b1 in the context of this problem. What percent of total variation in prices is explained by the regression model? Provide evidence to support your answer. Please include the excel function.

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