PLEASE SHOW AS IF USING EXCEL A recent study shows that 18% of adults in the...
PLEASE SHOW AS IF USING EXCEL
A recent study shows that 18% of adults in the US do not use the Internet. Suppose that 12 adults are randomly selected in the US.
Construct the PMF of X, the number of adults who don't use internet in this group.
What is the expected value and variance of X?
What is the probability that at least 1 of the adults uses the Internet?
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A recent study shows that 18% of adults in the...
6.24 In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of...
6.24 In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of them use the Internet regularly. Of the Internet users, 1054 use a social networking site. Find and interpret a 95% confidence interval for each of the following proportions: a) Proportion of US adults who use the internet regularly. b) Proportion of US adult Internet users who use a social networking site. c) Proportion of all US adults who use a social networking site. Use...
According to recent research, about 15% of all adults nationally who use the internet use Twitter...
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Harry Potter books have become popular with children and adults alike. A recent survey conducted in...
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Harry Potter books have become popular with children and adults alike. A recent survey conducted in...
Harry Potter books have become popular with children and adults alike. A recent survey conducted in London revealed that 64% high school students have read the first Harry Potter book. A random sample of 12 London high school students is taken, and the number of students who have read the first Harry Potter book is recorded. a) Define the random variable of interest and give its distribution, including the values of all the parameters. X = (Click to select)Probability...
4). a.b. In a recent poll, a random sample of adults in some country (18 years...
4).
a.b.
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please do 37 and 39 b. please do and show work. 37) A recent study finds...
please do 37 and 39 b. please do and show work.
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In a recent poll, a random sample of adults in some country (18 years and older)...
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In a recent p arados tample of adults in a certain cury (18 years and our) was asked, "When you see an adm i n that products Made in this country are you more more or lessly to buy it? The results of the survey, by age group, represented in the following contingency table Complete parts )and ) to buy essays buy it on Purchase kood 101454 More al 218 340 Lessly 23 10 Nethermore or loss ay 291 206...
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6.24 In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of them use the Internet regularly. Of the Internet users, 1054 use a social networking site. Find and interpret a 95% confidence interval for each of the following proportions: a) Proportion of US adults who use the internet regularly. b) Proportion of US adult Internet users who use a social networking site. c) Proportion of all US adults who use a social networking site. Use...
According to recent research, about 15% of all adults nationally who use the internet use Twitter Blank #1: Out of 30 selected adults who use the internet, what is the mean and standard deviation of the number who use Twitter (the expected value and the give or take amount). Report your answer as mean,stddev with no extra spaces. If any rounding is necessary, do so to two decimal places. Blank #2: Out of 30 people selected, what is the probability...
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4).
a.b.
In a recent poll, a random sample of adults in some country (18 years and older) was asked, "When you see an ad emphasizing that a product is "Made in our country," are you more likely to buy it, less likely to buy it, or neither more nor less likely to buy it?" The results of the survey, by age group, are presented in the following contingency table. Complete parts (a) through (c). Purchase likelihood 18-34 35-44 45-54...
please do 37 and 39 b. please do and show work.
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