A sample of rental cars showed the following annual mileage (in thousands of miles)46.76834.81369.19436.92757.66636.00342.96137.19447.75041.73844.23934.05231.73154.66130.92847.84731.28638.81340.16632.90542.05749.83447.55637.72922.12040.82241.10462.39932.55043.5589The sample mean mileage is,a40.990 thousand b41.912 thousand c42.855 thousand d43.819 thousand

Answered: A sample of rental cars showed 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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Statistics Question
The accompanying table contains historical data on staff salaries (in dollars per pupil) for 30 schools sampled in part of a country in the early 1970s. Complete parts (a) through (c) below. 3.86 2.80 2.71 2.95 3.08 1.802.60 3.32 2.52 2.12 2.58 2.682.76 2.85 3.67 3.84 3.43 2.122.94 2.83 3.04 2.43 2.18 3.693.21 3.67 2.39 2.61 3.42 3.45 a) Compute the sample mean and sample standarddeviation.(b) Construct a relative frequency histogram of thedata.(c) Construct a stem-and-leaf display of the data.
Make reference to the table below to answer the question that follows: Summary of number of times the child has been placed previously Mean Std. Dev. Freq. physically attacked people never sometimes often Total Source Between groups Within groups 5.5803571 5.9557503 8.7636364 8.7938607 9.8571429 7.8631146 Total 6.9893617 7.2826725 L₂² Analysis of Variance SS df MS 112 55 21 188 F 568.203236 2 284.101618 9349.77549 185 50.539327 9917.97872 187 53.0373194 Bartlett's test for equal variances: chi2(2) = 12.1506 Prob-chi2= 0.002 5.62 Prob > F Does this test violate the assumption of equal variances? 0.0043 O Yes, we are in violation of the assumption of equal variances because p= .002 for Bartlett's test O Yes, we are in violation of the assumption of equal variances because p= .0043 for the difference of means test O No, we are not in violation of the assumption of equal variances because .0043 for the difference of means test No, we are not in violation of the assumption of equal…
The table below contains data about the cost of electricity during a recent month for a random sample of 30 one-bedroom apartments in a large city. Complete parts (a) through (c) below. 97 161 141 94 109 174 184 148 162 124 206 88 208 153 184 179 119 174 152 153 146 174 124 133 112 104 112 129 142 135 Construct a cumulative percentage distribution. Cost($). Percentage less than indicated amount 80. __% 100 __% 120 __% 140 __% 160 __% 180 __% 200 __% 220 __%
A sample of rental cars showed the following annual mileage (in thousands of miles) 46.768 34.813 69.194 36.927 57.666 36.003 42.961 37.194 47.750 41.738 44.239 34.052 31.731 54.661 30.928 47.847 31.286 38.813 40.166 32.905 42.057 49.834 47.556 37.729 22.120 40.822 41.104 62.399 32.550 43.558 8 The sum of x is, a 1147.569 b 1183.061 c 1219.650 d 1257.371
The percentage (rounded to the nearest whole percent) of persons from each state completing 4 years or more of college is listed below. 23 24 26 14 30 36 34 28 26 22222NENN FREEBENENE 25 57 27 23 24 28 23 AN 28 24 a. Mean = 31 27 21 25 a. b. 24 34 C. 37 d. 38 e. 33 19 yes O no 27 21 ANNNNNN 33 24 30 24 25 24 26 21 b. Median = c. Mode = d. Sample Standard Deviation = places) e. Population Standard Deviation 25 places) f. Five-Number Summary: g. Interquartile Range h. Lower Fence = 2NN2852428 31 29 15 26 i. Upper Fence = j. Are there outliers in the data? = (round to one decimal place) (round to three decimal (round to three decimal
A regular-size girls' basketball was bounced from a certain height. The following data was collected and rounded to the nearest hundredth. Time (t) Height (ft) 0.01 1.88 0.11 3.05 0.21 4.13 0.31 4.91 0.41 5.37 0.51 5.50 0.61 5.31 0.71 4.82 0.81 4.00 0.91 2.97 (a) Use regression to find a quadratic model for the data. (Round the regression parameters to two decimal places.) H = Use the regression model to answer parts (b).(b) When will the ball first be 3.28 feet off the ground? (Round your answer to 3 decimal places.) seconds
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46.768	34.813	69.194	36.927	57.666	36.003
42.961	37.194	47.750	41.738	44.239	34.052
31.731	54.661	30.928	47.847	31.286	38.813
40.166	32.905	42.057	49.834	47.556	37.729
22.120	40.822	41.104	62.399	32.550	43.558

9	The sample mean mileage is,
a	40.990 thousand
b	41.912 thousand
c	42.855 thousand
d	43.819 thousand