Perform test of hypothesis.1. DRIVING FOR PLEASURE. Two groups of drivers are surveyed to see how many milesper week they drive for pleasure trips. The data are shown. At alpha = 0.05 ( level ofsignificance), can it be concluded that single drivers do more driving for pleasuretrips on average than married drivers ?Single drivers :106110115121132 11997118122135110117116Married drivers:97104 13810211513312011913696139108117

Solution To trest the hypothesis we will use t distribution.

Answered: Perform test of hypothesis. 1. DRIVING…

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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Section 9.1 Question #5 A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 302 people over the age of 55, 80 dream in black and white, and among 296 people under the age of 25, 15 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? A. H0: p1 = p2 H1: p1 < p2 B. H0: p1 = p2 H1: p1 > p2 C. H0: p1 ≤ p2 H1: p1 ≠ p2 D. H0: p1 ≠ p2 H1: p1 = p2 E. H0: p1 ≥ p2 H1: p1 ≠ p2 F. H0: p1 = p2 H1: p1 ≠ p2 Identify the test statistic. z= ___________ (Round to…
Test the hypothesis based on the given data. Two groups of drivers were surveyed to see how many miles per week they drive for pleasure trips. The data are shown, a=0.01 Single Drivers Married Drivers 106 110 115 121 132 97 102 115 104 138 | 119 97 118 122 135 133 120 119 136 96 110 117 116 138 142 139 108 117 145 114 | 115 114 113 98 99 140 136 113 113 150 108 117 152 147 117 101 114 116 113 135 154 86 115 116 104 115 109 147 106 88 107 113 138 142 140 113 119 99 108 105 Write the hypotheses for the difference of variances. (Copy and paste this variance symbol for your answer: 8², for variance 1 & 8?, for variance 2) Ho : На: The test was run in MS Excel and generated these results. Single Drivers Maried Drivers Mean 118.9142857 117.8 Variance 261.1983193 257.6941176 Observations 35 35 df 34 34 F 1.013598299 P(F<=f) one-tai F Critical one-tail 0.484409402 2.258266094 What statistical test was used to compare the variances? Conclude about the variances of the two samples. Use the…
This is a follow up question please answer both
Q2. a). Discuss the importance of absolute and relative measure of dispersion with examples. b). Using the following data, Discuss the Absolute and relative measure of variance 14-16 | 17-19 | 20-22 | 23-25 26-28 | 29-31 Age Interval # students 56 58 45 76 32 12
pauieidxa aJe Pien aun 2. Consider the following data on the hours of burnout for a sample of 59 lightbulbs 68 70 86 88 62 61 79 92 116 103 68 63 88 81 62 74 62 94 71 70 58 98 98 65 73 71 70 97 94 59 57 90 71 101 78 43 59 67 61 71 96 75 64 76 72 77 74 65 82 86 66 86 96 107 57 97 86 59 83 Describe the shape of the data using coefficient measures based on the moments 3. Ten competitors in a beauty contest are ranked by three judges as follows: Competitors Judges 6. 7 8 9. 10 1|Page
12.2 ONLY!
A sociologist is interested in studying the relationship between education and crime. She randomly selects 332 people and asks them their education level and whether or not they have ever been convicted of a felony. Is there evidence that education level and crime are dependent? Education Level No Felony Conviction Felony Conviction Total Less than 99 years 95 12 107 99 years - 1212 years 86 11 97 1212 years - 1616 years 59 7 66 16+16+ years 56 6 6262 Total 296 36 332 Copy Data Step 4 of 8 : Find the value of the test statistic. Round your answer to three decimal places.
When a student performs poorly on a midterm exam, the student sometimes is convinced that their score is an anomaly and that they will do much better on the final exam. The data below show the midterm and final scores (out of 100 points) for eight students in an introductory statistics class. Student Midterm Final 1 70 88 2 58 52 3 85 84 4 82 74 5 70 80 40 36 7 85 48 8 85 96 a) Construct a scatterplot for the data. Describe the pattern that you see in the scatterplot. Are there any clusters or outliers? If so, how would you explain them? b) Calculate the regression line for predicting a student's score on the final exam based on the student's score on the midterm.
The table shows the estimated distribution of injury severity by child passenger.What is the probability that the child involved in the accident is at least 1 year old
Performance anxiety is a disorder that impacts over 60 per cent of the world’s population. The impact of different types of performative activity on anxiety levels is not clear. 120 individuals were included in a focus group and where subject to performances in speech, dance and singing in front of a live audience. Their heart rates were measured for each performance and the average rate recorded: Speaking Singing Dancing 148 86 116 146 149 105 144 75 133 139 114 82 96 131 141 72 114 121 121 140 136 77 135 101 109 106 91 100 112 93 87 140 76 71 110 77 107 73 112 82 145 92 117 114 105 80 89 71 80 150 122 117 139 134 73 98 120 104 144 116 93 84 118 123 118 113 95 114 136 73 78 89 137 146 109 74 133 101 75 144 139 98 125 91 141 101 124 81 113 120 124 126 95 108 127 108 101 138 125 139 81 136 116 123 126 139 132 80 72 107 76 137 119 109 143 140 120 128 137 138 150 82 98 106 86 133 140 87 72 148 101…
A random sample of n1n1 = 235 people who live in a city were selected and 79 identified as a "dog person." A random sample of n2n2 = 93 people who live in a rural area were selected and 67 identified as a "dog person." Find the 99% confidence interval for the difference in the proportion of people that live in a city who identify as a "dog person" and the proportion of people that live in a rural area who identify as a "dog person." Round answers to to 4 decimal places. < p1−p2<
The boxplot shown below results from the heights (cm) of males listed in a data set. What do the numbers in that boxplot tell us? 152 173.3 194 169.6 179.5 The minimum height is cm, the first quartile Q, is cm, the second quartile Q, (or the median) is cm, the third quartile Q, is cm, and the maximum height is cm. (Type integers or decimals. Do not round.) O Time MacBook Pro -> G Search or type URL esc ! %23 $ & 1 4 5 7 8 9 Q W R Y tab S F K caps lock C V shift fn comman control option command

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