A researcher wants to study the relationship between salary and gender. She randomly selects 218 individuals and determines their salary andgender. Can the researcher conclude that salary and gender are dependent?IncomeMale FemaleBelow $25,0001812$25,000-$50,0003523$50,000-$75,000 2660Above $75,000 2618105 113TotalTotal30588644218Copy DataStep 3 of 8: Find the expected value for the number of men with an income $25,000-$50,000. Round your answer to one decimal place.

Answer income Male Female Totalbelow 25000…

Answered: A researcher wants to study 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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Given the following data set: $1.42, $1.27, $1.28, $1.48, $1.36, $1.44, $1.46, $1.32, $1.33, $1.33 $1.23, $1.38, $1.43, $1.28, $1.43, $1.49, $1.37, $1.26, $1.26, $1.38 Determine the frequencies of gasoline prices for each given class. Frequency Relative Frequency Class < $1.25 $1.25 < $1.30 $1.30 $1.35 $1.35 $1.40 $1.40 < $1.45 $1.45 CHECK ANSWER
A dental supplies distributor ships a customer of 50 boxes of product A, 30 boxes of B, 60 boxes of C, and 20 boxes of D. The unit shipping costs (dollars per box) for the four products are $5, $2, $4, and $10 respectively. What is the weighted mean for shipping cost per unit?
2. How does the cost of shipping a standard-sized crate relate to the distance of the destination? Can the cost of shipping be determined using the distance of the destination? To answer these questions, a Philippine Airlines statistician used 12 freight invoices randomly drawn and summarized below. Charge (in pesos) Distance (hundred of kilometers) 14 1400 23 2000 800 17 1600 10 1620 22 1900 5 620 12 1440 900 16 1800 25 2100 8 750 (a) Identify the independent and dependent variables. Justify your answer. Plot the scatter diagram for the data
Is there a relationship between test scores of persons who have gone through a certain job training program and their subsequent performance on the job. Poor Fair Good Total Below avg. 67 64 25 156 Average 42 76 56 174 Above 10 23 37 70 Totals 119 163 118 400 State the conclusion.
The salaries of the employees at four companies are summarized below. Answer the questions about them. Company A: The mean salary is $22,000 and the range of salaries is $47,000 .Company B: The mean salary is $14,000 and the range of salaries is $48,000 .Company C: The mean salary is $16,000 and the range of salaries is $46,000 .Company D: The mean salary is $19,000 and the range of salaries is $55,000 . (a) Based on the information above, which company's salaries have the most variability? Company A Company B Company C Company D (b) Based on the information above, which company has the highest salaries on average? Company A Company B Company C Company D
In a recent year, the Better Business Bureau settled 75% of complaints they received. (Source: USA Today, March 2, 2009) You have been hired by the Bureau to investigate complaints this year involving computer stores. You plan to select a random sample of complaints to estimate the proportion of complaints the Bureau is able to settle. Assume the population proportion of complaints settled for the computer stores is the 0.75, as mentioned above. Suppose your sample size is 230. What is the probability that the sample proportion will be within 4 percent of the population proportion?Note: You should carefully round any z-values you calculate to 4 decimal places to match wamap's approach and calculations. (Enter your answer as a number accurate to 4 decimal places.)
A researcher wants to study the relationship between salary and gender. She randomly selects 400400 individuals and determines their salary and gender. Can the researcher conclude that salary and gender are dependent? Income Male Female Total Below $25,000$⁢25,000 5050 4848 9898 $25,000$⁢25,000-$50,000$⁢50,000 3434 3535 6969 $50,000$⁢50,000-$75,000$⁢75,000 6262 5656 118118 Above $75,000$⁢75,000 5454 6161 115115 Total 200200 200200 400400 Copy Data Step 3 of 8: Find the expected value for the number of men with an income $50,000$⁢50,000-$75,000$⁢75,000. Round your answer to one decimal place.
The following table presents the intelligence quotients of runaway boys. Intelligence Quotient Number 30 - 39 40 - 49 50 - 59 60 - 69 70 - 79 80 - 89 90 - 99 100 - 109 6 60 140 184 139 78 37 110 - 119 14 What does the computed data tell about the IQ of runaway boys?
The table shows data about student involvement in extracurricular activities at a local high school. Extracurricular Activities Involved in Not Involved in Activities Activities Totals Male 112 145 257 Female 139 120 259 Totals 251 265 516 P(femalel involved in activities)? 265 516 139 251 251 516 139 516
Estimate u from the following incomplete data : X= 1 3 4 5 기? 13 21 37
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.
A researcher wants to study the relationship between salary and gender. She randomly selects 392 individuals and determines their salary and gender. Can the researcher conclude that salary and gender are dependent? Income Male Female Total Below $25,000$⁢25,000 48 45 93 $25,000$⁢25,000-$50,000$⁢50,000 38 36 74 $50,000$⁢50,000-$75,000$⁢75,000 46 40 86 Above $75,000$⁢75,000 68 71 139 Total 200 192 392 State the conclusion of the hypothesis test at the 0.010.01 level of significance.

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