a simple random sample of 250 classified adult subjects according to sex (male and female) and...
a simple random sample of 250 classified adult subjects according to sex (male and female) and employment (unemployed and employed). of the 175 males in this sample, 140 are unemployed. there are 90 employed persons in this sample. construct two contingency table one table with observed frequencies the other with expected frequencies
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a simple random sample of 250 classified adult subjects
according to sex (male and female) and...
A sample of 120 people is classified by gender (male/female) and by whether or not they...
A sample of 120 people is classified by gender (male/female) and by whether or not they are registered voters. The sample consists of 70 females and 50 males, and has a total of 60 registered voters. If these data are used for a chi-square test for independence, what is the total number of females for the expected frequencies of voters?
A sample of 100 people is classified by gender (male/female) and by whether or not they...
A sample of 100 people is classified by gender (male/female) and by whether or not they are registered voters. The sample consists of 80 females and 20 males, and has a total of 60 registered voters. If these data were used for a chi-square test for independence, what is the expected frequency for males who are registered voters? Group of answer choices 12 40 20 60
ion 10.2: Survey Results. Assume that a yes/ sample of female and male subjects and the...
ion 10.2: Survey Results. Assume that a yes/ sample of female and male subjects and the results are summarized in a two-way the one to the right. Use the given value of the y2 test statistic and the given signinica level to test for independence between gender and response, consulting table needed. [1 point each no survey question is presented to a simple random table li ke 10.7 as Yes No Male Female 3) Test statistic: χ2 = 7.82; significance...
A sample of 349 students at a university is surveyed. The students are classified according to...
A sample of 349 students at a university is surveyed. The students are classified according to gender ("female" or "male"). They are also classified according to major ("biology", "business", "engineering", "mathematics", or "computer science"). The results are given in the contingency table below. Biology Business Engineering Mathematics Computer science Female 45 47 27 32 36 Male 49 25 36 17 35 What is the relative frequency of business majors in the sample? Round your answer to two decimal places. Х...
3.8 A marketing survey for a large department store classified the store's customers according to whether...
3.8 A marketing survey for a large department store classified the store's customers according to whether they were male or female and according to their residence, suburban or city. The proportions of customers falling in the four categories are shown in the following probability table. Each entry in the table represents a possible outcome of the experiment (a simple event). Sex Residence Male Female total Suburban 17 .67 0.84 City .04 .120.16 total = 0.71 0.791.00 Suppose a single adult...
A sample of 271 students at a university is surveyed. The students are classified according to...
A sample of 271 students at a university is surveyed. The students are classified according to gender ("female" or "male"). They are also dassified according to major (biology", "business", "engineering". "mathematics", or "computer science"). The results are given in the contingency table below. Biology Business Engineering Mathematics Computer science Female 31 18 25 22 24 Male 21 23 21 8 08 38 18 What is the relative frequency of female students in the sample? Round your answer to two decimal...
Listed below are speeds (mih) measured from traffic on a busy highway. This simple random sample...
Listed below are speeds (mih) measured from traffic on a busy highway. This simple random sample was obtained at 3:30 P.M. on a weekday. Use the sample data to construct a 98% confidence interval estimate of the population standard deviation. 60 84 64 65 64 55 59 58 59 69 58 67 Click the icon to view the table of Chi-Square critical values. The confidence interval estimate is mih<o< (Round to one decimal place as needed.) mih. Refer to the...
Suppose a simple random sample of 26 male students is asked whether they have pulled an...
Suppose a simple random sample of 26 male students is asked whether they have pulled an "all-nighter " for academic reasons and 10 answered "yes." Suppose a simple random sample of 25 female students is asked whether they have pulled an "all-nighter" for academic reasons and 8 answered "yes." Using a 0.06 significance level, construct a confidence interval for the claim that male and female students are equally likely to have pulled an "all-nighter" for academic reasons?
A simple random sample of 8 computer programmers revealed the sex of the programmers and the...
A simple random sample of 8 computer programmers revealed the sex of the programmers and the following information about their weekly incomes. Programmer Weekly Income Sex A $550 M B $654 M C $911 F D $500 M E $727 M F $688 F G $1000 F H $892 M If all the salaries were written on separate pieces of paper, and one was drawn at random, what is the probability that the one that was drawn would be over...
A simple random sample of size n equals 250 individuals who are currently employed is asked...
A simple random sample of size n equals 250 individuals who are currently employed is asked if they work at home at least once per week. Of the 250 employed individuals surveyed, 34 responded that they did work at home at least once per week. Construct a 99% confidence interval for the population proportion of employed individuals who work at home at least once per week.
ion 10.2: Survey Results. Assume that a yes/ sample of female and male subjects and the results are summarized in a two-way the one to the right. Use the given value of the y2 test statistic and the given signinica level to test for independence between gender and response, consulting table needed. [1 point each no survey question is presented to a simple random table li ke 10.7 as Yes No Male Female 3) Test statistic: χ2 = 7.82; significance...
A sample of 349 students at a university is surveyed. The students are classified according to gender ("female" or "male"). They are also classified according to major ("biology", "business", "engineering", "mathematics", or "computer science"). The results are given in the contingency table below. Biology Business Engineering Mathematics Computer science Female 45 47 27 32 36 Male 49 25 36 17 35 What is the relative frequency of business majors in the sample? Round your answer to two decimal places. Х...
3.8 A marketing survey for a large department store classified the store's customers according to whether they were male or female and according to their residence, suburban or city. The proportions of customers falling in the four categories are shown in the following probability table. Each entry in the table represents a possible outcome of the experiment (a simple event). Sex Residence Male Female total Suburban 17 .67 0.84 City .04 .120.16 total = 0.71 0.791.00 Suppose a single adult...
A sample of 271 students at a university is surveyed. The students are classified according to gender ("female" or "male"). They are also dassified according to major (biology", "business", "engineering". "mathematics", or "computer science"). The results are given in the contingency table below. Biology Business Engineering Mathematics Computer science Female 31 18 25 22 24 Male 21 23 21 8 08 38 18 What is the relative frequency of female students in the sample? Round your answer to two decimal...
Listed below are speeds (mih) measured from traffic on a busy highway. This simple random sample was obtained at 3:30 P.M. on a weekday. Use the sample data to construct a 98% confidence interval estimate of the population standard deviation. 60 84 64 65 64 55 59 58 59 69 58 67 Click the icon to view the table of Chi-Square critical values. The confidence interval estimate is mih<o< (Round to one decimal place as needed.) mih. Refer to the...
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