in a survey of consumers aged 12 and older , respondents were asked how many cell...

in a survey of consumers aged 12 and older , respondents were asked how many cell phones were in use by the household.(No two respondents were from the same household) Among the respondents , 216 answered"none", 288 said "one", 376 said "two", 136 sid" three", and 34 respondents with four or more . A survey respondent is selected at random. Find the probability that his/her household has four or more cell phones in use. Is it unlikely for a housild to have four or more cell phones in use? Consider an event to be unlikely if its probability is less than or equal to 0.05.

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

When the 127 workers aged 18-25 in the 2008 General Social Survey were asked how many...

When the 127 workers aged 18-25 in the 2008 General Social Survey were asked how many hours they worked in the previous week, the mean was 37.47 with a standard deviation of 13.63. Test that the mean hours worked per week for this sample is different from a population mean of 40 hours worked per week at the 10% significance level. a) What is the appropriate test to conduct. -One-sample t-test for means One-sample t-test for proportions One-sample z-test for...

In a Survey respondents were asked whether or not they had a Facebook account. Of men...

In a Survey respondents were asked whether or not they had a Facebook account. Of men 215 men, 70 had an active facebook profile, while 347 had 85 active profiles. Given that facebook has had an approximately 50 million users. A) Are these two population dependent or independent? Explain B)Find the point estimate for each population rounded to two decimals. C) Can we say that this is normally distributed data? why? D) Are there more males than females on facebook?...

A research group conducted a survey about church attendance. The survey respondents were asked about their...

A research group conducted a survey about church attendance. The survey respondents were asked about their church attendance and asked to indicate their age. The results are as follows: Church Attendance Age 20 to 29 30 to 39 40 to 49 50 to 59 Yes 60 30 68 100 No 87 107 80 50 Answer the following four questions. Use 5% level of significance throughout. 1.We use the sample data above to determine whether church attendance is independent of age....

A survey asked parents of children aged ten and under how many birthday parties they attended...

A survey asked parents of children aged ten and under how many birthday parties they attended last year. Let X represent the number of birthday parties. The probability distribution is given below. Find the mean and the standard deviation of the probability distribution using Excel. Round the mean and standard deviation to three decimal places. x P(x) 1 0.0303 2 0.0639 3 0.0197 4 0.003 5 0.0164 6 0.0454 7 0.0981 8 0.0648 9 0.0657 10 0.0124 11 0.0118 12...

In a survey, respondents were asked, "Would you be willing to pay higher taxes if the...

In a survey, respondents were asked, "Would you be willing to pay higher taxes if the tax revenue went directly toward deficit reduction?" Treat the respondents as a simple random sample of adults. Complete parts (a) and (b). DATA Gender Response Male Yes Female No Female Yes Female No Male No Female No Male No Male No Female No Male Yes Male Yes Female No Female No Male Yes Male No Female Yes Male No Male No Female Yes Female ...

Adults aged 18 years old and older were randomly selected for a survey on obesity. Adults...

Adults aged 18 years old and older were randomly selected for a survey on obesity. Adults are considered obese if their body mass index (BMI) is at least 30. The researchers wanted to determine if the proportion of women in the south who are obese is less than the proportion of southern men who are obese. The results are shown in the table below. # who are obese sample size Men 42,769 155,525 Women 67,169 248,775 At the1% level of...

2. The data below are from the 2016 General Social Survey. Respondents were asked to describe...

2. The data below are from the 2016 General Social Survey. Respondents were asked to describe whether their religion was (1) fundamentalist, (2) moderate or (3) liberal. Respondents were also asked whether they believed in evolution from the statement “Human beings developed from animals.” Respondents not believing in evolution said (1) “false” while supporters of evolution said (2) “true”. Which variable below is the independent variable? The dependent variable? Correctly percentage the data in the table. (Do not calculate the...

In a 2012 survey of Internet users, respondents were asked whether they used social networking sites....

In a 2012 survey of Internet users, respondents were asked whether they used social networking sites. The following 2 ✕ 2 table of counts and row percentages displays the results by sex of the respondent. Use Social Networking Sites? Yes No Total Men 521 (62%) 324 (38%) 845 (100%) Women 680 (71%) 281 (29%) 961 (100%) Total 1,201 605 1,806 ( (b) Calculate the value of the chi-square statistic in this situation. (Round your answer to two decimal places.) χ2...

In a 2012 survey of Internet users, respondents were asked whether they used social networking sites....

Respondents in the 2017 General Social Survey (GSS) were asked “on an average work day, about...

Respondents in the 2017 General Social Survey (GSS) were asked “on an average work day, about how many hours do you have to relax or pursue the activities that you enjoy?”. 244 males responded to the question and 262 females responded. Men reported an average of 3.28 hours per day (with a standard deviation of 2.12 hours) and women reported an average of 2.99 hours per day (sd=2.05). A. Calculate and interpret the 95% confidence interval for relaxation hours for...

Subjects