Energy Cost Family ID1 Family energy cost data2111.An economist wants to determine whether the monthly energy cost for families has changed from theprevious year, when the mean cost per month was $200. The economist randomly samples 25 familiesand records their energy costs for the current year. Has the energy cost changed significantly since lastyear?572558325044783071847(1) The statistical test that you choose8(2) The answer to the question as a statistical statement.4354603081018811111126761332614142152551620517771819019320204072133322488233742440925

Answered: Image /qna-images/answer/3ea75aa4-2f86-4998-b837-e699b42fd7c0.jpg

Answered: Energy Cost Family ID 1 Family energy…

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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Describe in detail the results achieved on the company’s test. Ignore other variables for now, just describe the test results. If the company is considering training for the lowest 10% of employees what score would they need to achieve to be exempted from training? Test Result 163 148 142 173 168 155 163 194 119 124 149 171 160 104 165 154 122 160 148 138 158 112 189 163 203 165 176 152 74 129 166 134 124 169 187 163 172 195 149 107 156 183 133 83 148 127 173 95 139 179 136 153 141 155 179 152 129 155 145 113 142 147 171 139 174 143 96 199 143 172 123 146 128 187 138 163 178 154 199 164 123 201 205 135 123 138 195 184 165 196 154 176 82 173 156 149 152 116 174 141 111 74 123 182 157 141 167 162 172 107 149 182 112 135 177 159 138 163 148 198…
(c) Determine if the means of samples 1 and 2 overestimate, underestimate, or are equal to the population mean. The mean pulse rate of sample 1 the population mean. The mean pulse rate of sample 2 the population mean.
Identification: It is used in testing one population mean when the sample is small. The difference between population means when the samples are independent and small.
A survey was conducted two years ago asking college students their top motivations for using a credit card. You think this distribution has changed. You randomly select 425 college students and ask each one what the top motivation is for using a credit card. Can you conclude that there has been a change in the distribution? Use a = 0.025. Complete parts (a) through (d). Response Old Survey % 29% New Survey Frequency, f Rewards 110 Low rates Cash back Discounts 23% 96 21% 109 7% 46 Other 20% 64 O B. The distribution of motivations is 110 rewards, 96 low rate, 109 cash back, 46 discounts, and 64 other. O C. The distribution of motivations is 29% rewards, 23% low rate, 21% cash back, 7% discounts, and 20% other. Which hypothesis is the claim? o Ho (b) Determine the critical value, Yo, and the rejection region. X = 11.143 (Round to three decimal places as needed.) Choose the correct rejection region below. Oc. X
When manually calculating a Mann-Whitney analysis, the first step is to organize your data in numerical order, from lowest to highest. Which of the following statements is true about this step in the analysis process. Group of answer choices The data should be squared before you sum the data. The data from both groups should be combined before ranking the data. The data should be summed (added) before ranking the data. The data should be ranked with each group independently.
The boxplot below shows salaries for CPAS and Actuaries in a town. CPA Actuary 30 40 50 60 70 80 90 100 110 120 Salary (thousands of $) Q If a person is making the third quartile salary for a CPA, his earning is equivalent to the Select an answer salary for an Actuaries, and he is making less than % of Actuaries. ✓ Select an answer Question Help:Written Example Message instructor Submit Question median first quartile third quartile maximum minimum
HOW Do I solve this in EXCEL In 2016, the Better Business Bureau (BBB) settled 80% of complaints they received in the US. Suppose you have been hired by the BBB to investigate the complains they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the BBB is able to settle. Assume the population proportion of complaints settled for new car dealers is 0.8, the same as the overall proportion of complaints settled in 2016. Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of pbar. Based on a sample of 200 complaints, what is the probability that the sample proportion will be within 0.04 of the population proportion? Suppose you select a sample of 450 complaints involving new car dealers. Show the sampling distribution of pbar. Based on the smaller sample of only 450 complaints, what is the probability that the sample proportion will be within…
In reality, there were many students who took the midterm. Take a random sample of 5 students and record their scores. Then find the mean. Scores:__________________________ Mean:___________ Take another random sample of 5 students and record their scores. Then find the mean. Scores:__________________________ Mean:___________ Three more times: Scores:__________________________ Mean:___________ Scores:__________________________ Mean:___________ Scores:__________________________ Mean:___________ Write each mean on a different sticker and put the stickers in the appropriate location on the poster at the front of the room. 2. Copy down the dot plot that is created on the poster. 3. What does each dot on the poster represent?
8:28 Solve for the mean, median, and mode of the grouped data. Add more values of the FDT needed for the answer. You may use the back page to write your answers. Classes f 23-27 4 28-32 8 33-37 14 38-42 10 Total X LCB
2 part question done in Excel. 1. Data are collected in a clinical trial evaluating a new compound designed to improve wound healing in trauma patients. The new compound is compared against a placebo. After treatment for 5 days with the new compound or placebo, the extent of the wound healing is measured and the date are show in the table below. Is there a difference in the extent of wound healing by treatment (Hint: Are treatment and the percent wound healing independent?) Run the appropriate tes at a 5% level of significance. 2. Use the data in Problem 1 and pool the data across the treatments into one sample of size n=250. Use the pooled data to test whether the distribution of the percent wound healing is approximately normal. Specifically, use the following distributions: 30%, 40%, 20%, and 10%. Run the appropriate test at a = 0.05.
Determine the mean of the randon variable

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