Homework Answers
22)
Solution :
Median is the middle most observations in the data when observations are arranged in increasing
or decreasing order of their values.
Median = (4070 + 4811) / 2 = $4440.50
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Question 22 1 pts Find the median for the given sample data. A new business had...
Find the (a) mean, (b) median, (c) mode, and (d) midrange for the given sample data....
Find the (a) mean, (b) median, (c) mode, and (d) midrange for the given sample data. An experiment was conducted to determine whether a deficiency of carbon dioxide in the soil affects the phenotype of peas. Listed below are the phenotype codes where 1 equals smooth dash yellow1=smooth-yellow, 2 equals smooth dash green2=smooth-green, 3 equals wrinkled dash yellow3=wrinkled-yellow, and 4 equals wrinkled dash green4=wrinkled-green. Do the results make sense? 44 11 44 22 44 44 11 44 11 44 22...
Find the (a) mean, (b) median, (c) mode, and (d) midrange for the given sample data....
Find the (a) mean, (b) median, (c) mode, and (d) midrange for the given sample data. An experiment was conducted to determine whether a deficiency of carbon dioxide in the soil affects the phenotype of peas. Listed below are the phenotype codes where 1 3-wrinkled-yellow, and 4 wrinkled-green. Do the results make sense? 4 smooth-yellow, 2-smooth-green, 3 2 2 (a) The mean phenotype code is (Round to the nearest tenth as needed.) (b) The median phenotype code is (Type an...
Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given question.
Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given question.Listed below are the jersey numbers of 11 players randomly selected from the roster of a championship sports team. What do the results tell us? 9 94 58 38 42 73 46 15 88 64 7a. Find the mean. The mean is _______ . (Type an integer or a decimal rounded to one decimal place as needed.) b. Find the median. The...
Scenario 1 A sample of 22 cars of a particular model had a sample gas mileage...
Scenario 1 A sample of 22 cars of a particular model had a sample gas mileage of 33.56 mpg with a standard deviation of 2.74 mpg. Assume that gas mileage for the model is normally distributed. Create a 95% confidence interval around the sample mean. What is the critical t-score for the confidence interval, +? Go to three decimals Question 2 0.5 pts Use Scenario 1 What is the value of the standard error? Go to 2 decimals) Photos Coachell...
Question 14 8 pts Use the given degree of confidence and sample data to find a...
Question 14 8 pts Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation o. Assume that the population has a normal distribution. Round the confidence interval limits to the same number of decimal places as the sample standard deviation. College students' annual earnings: 98% confidence; n = 9, sample mean is $4121,s = $873 $531<o< $1708 $590 <o< $1672 $551<o<$1925 $687 <o< $1139
Question 10 1 pts Calculate sample standard deviation for the following data collection: 22, 24, 28,...
Question 10 1 pts Calculate sample standard deviation for the following data collection: 22, 24, 28, 31, 35 (use formula for sample, not for population: when you calculate variance divide by N-1 not by O 5.2 O 6.4 O 7.1 O 8.0 Question 2 1 pts Table below shows example of frequency and relative-frequency distribution Relative frequency 0.16 0.24 0.40 0.20 1.00 Interval Frequency 22-29 30-39 40-49 50-59 Total 4 6 2 Find missing frequency for interval 40-49. O 10...
Question 1 Suppose we are given the data 2 -1 22: 2 -2 0 2 0...
Question 1 Suppose we are given the data 2 -1 22: 2 -2 0 2 0 -1 -2 -3 30 2 2 2 1 0 -1 0 -1 We aim at fitting the linear model Y; = Bo + Bizil + B22i2 + Ei, i = 1, 2, ..., 7. (1) Find the least square estimate B; (2) Find the R2 statistic; (3) Find ô2 and Cov(); (4) Find a 95% confidence interval for B1; (5) Test Ho: B1 =...
Please answer all Question 24 1 pts Solve the problem. A 90% confidence interval for the...
Please answer all
Question 24 1 pts Solve the problem. A 90% confidence interval for the average salary of all CEOs in the electronics industry was constructed using the results of a random survey of 45 CEOs. The interval was to make more useful inferences from the data, it is desired to reduce the width of the confidence interval. Which of the following will result in a reduced interval width? O Decrease the sample size and decrease the confidence level....
il Boost 7:49 PM Exit Question 5 5 pts Use the given data to find the...
il Boost 7:49 PM Exit Question 5 5 pts Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.018; confidence level: 99%;p and unknown 4966 04114 7116 5117 ..l Boost 7:49 PM Exit Express the null hypothesis and the alternative hypothesis in symbolic form for a test to support this claim. Use the correct symbol q,p, a) for the indicated parameter. An entomologist writes an article in a scientific journal...
Question 1. [11X2=22 pts) A household survey enumerated 25,450 population from a sample of 3,275 households...
Question 1. [11X2=22 pts) A household survey enumerated 25,450 population from a sample of 3,275 households in a city. Among the enumerated population 12,895 were males and the rest were females. Of the total population, 30% were females aged 15-49 years and 10% were children aged 0-4 years. Overall, 420 people died in a year in the population. There were 8,145 children under age 15 years, 10,456 persons between age 15-64 and the rest were aged person of age 65...
Find the (a) mean, (b) median, (c) mode, and (d) midrange for the given sample data. An experiment was conducted to determine whether a deficiency of carbon dioxide in the soil affects the phenotype of peas. Listed below are the phenotype codes where 1 3-wrinkled-yellow, and 4 wrinkled-green. Do the results make sense? 4 smooth-yellow, 2-smooth-green, 3 2 2 (a) The mean phenotype code is (Round to the nearest tenth as needed.) (b) The median phenotype code is (Type an...
Scenario 1 A sample of 22 cars of a particular model had a sample gas mileage of 33.56 mpg with a standard deviation of 2.74 mpg. Assume that gas mileage for the model is normally distributed. Create a 95% confidence interval around the sample mean. What is the critical t-score for the confidence interval, +? Go to three decimals Question 2 0.5 pts Use Scenario 1 What is the value of the standard error? Go to 2 decimals) Photos Coachell...
Question 14 8 pts Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation o. Assume that the population has a normal distribution. Round the confidence interval limits to the same number of decimal places as the sample standard deviation. College students' annual earnings: 98% confidence; n = 9, sample mean is $4121,s = $873 $531<o< $1708 $590 <o< $1672 $551<o<$1925 $687 <o< $1139
Question 10 1 pts Calculate sample standard deviation for the following data collection: 22, 24, 28, 31, 35 (use formula for sample, not for population: when you calculate variance divide by N-1 not by O 5.2 O 6.4 O 7.1 O 8.0 Question 2 1 pts Table below shows example of frequency and relative-frequency distribution Relative frequency 0.16 0.24 0.40 0.20 1.00 Interval Frequency 22-29 30-39 40-49 50-59 Total 4 6 2 Find missing frequency for interval 40-49. O 10...
Question 1 Suppose we are given the data 2 -1 22: 2 -2 0 2 0 -1 -2 -3 30 2 2 2 1 0 -1 0 -1 We aim at fitting the linear model Y; = Bo + Bizil + B22i2 + Ei, i = 1, 2, ..., 7. (1) Find the least square estimate B; (2) Find the R2 statistic; (3) Find ô2 and Cov(); (4) Find a 95% confidence interval for B1; (5) Test Ho: B1 =...
Please answer all
Question 24 1 pts Solve the problem. A 90% confidence interval for the average salary of all CEOs in the electronics industry was constructed using the results of a random survey of 45 CEOs. The interval was to make more useful inferences from the data, it is desired to reduce the width of the confidence interval. Which of the following will result in a reduced interval width? O Decrease the sample size and decrease the confidence level....
il Boost 7:49 PM Exit Question 5 5 pts Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.018; confidence level: 99%;p and unknown 4966 04114 7116 5117 ..l Boost 7:49 PM Exit Express the null hypothesis and the alternative hypothesis in symbolic form for a test to support this claim. Use the correct symbol q,p, a) for the indicated parameter. An entomologist writes an article in a scientific journal...
Question 1. [11X2=22 pts) A household survey enumerated 25,450 population from a sample of 3,275 households in a city. Among the enumerated population 12,895 were males and the rest were females. Of the total population, 30% were females aged 15-49 years and 10% were children aged 0-4 years. Overall, 420 people died in a year in the population. There were 8,145 children under age 15 years, 10,456 persons between age 15-64 and the rest were aged person of age 65...
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