a)
here margin of error E = | 0.020 | ||
for96% CI crtiical Z = | 2.054 | from excel:normsinv((1+0.96)/2) | |
estimated prop.=p= | 0.740 | ||
sample size n= p*(1-p)*(z/E)2= | 2029 | (rounding up) |
b)
here margin of error E = | 0.020 | |
for96% CI crtiical Z = | 2.054 | from excel:normsinv((1+0.96)/2) |
estimated prop.=p= | 0.500 | |
sample size n= p*(1-p)*(z/E)2= | 2637 | (rounding up) |
c)
1
According to the Canadian Internet Use Survey conducted by Statistics Canada in 2018, 74% of Canadian...
The 2018 Canadian internet use survey showed, overall, 94% of Canadians had home internet access, and about 87% of the internet users bought goods or services online, spending $57.4 billion. Suppose 81 internet users with home internet access were randomly and independently sampled. Find the probability that at least 20% of those sampled currently did not buy goods or services online. Round your answers to the nearest ten-thousandth (4 decimals).
The 2018 Canadian internet use survey showed, overall, 94% of Canadians had home internet access, and about 85% of the internet users bought goods or services online, spending $57.4 billion. Suppose 64 internet users with home internet access were randomly and independently sampled. Find the probability that at least 25% of those sampled currently did not buy goods or services online. Round your answers to the nearest ten-thousandth (4 decimals).
solve both pls A survey is to be conducted to determine the average driving in miles by MS dents. The investigator wants to know how are the sample should be taken to confidence interval on the true average within 1.5 miles. A similar study on the past found that the population standard deviation was 82 miles Bonus(5 points): A recent study of 750 Internet users in Europe found that 35% of Internet users were women. What is the 96% confidence...
A researcher wishes to estimate the proportion of adults who have high-speed internet access. What size sample should be obtained if she wishes to estimate to be within 0.02 with 95% confidence if (a) She uses a previous estimate of 0.38? (b) she does not use any prior estimates?
A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.02 with 95% confidence if (a) she uses a previous estimate of 0.42? (b) she does not use any prior estimates?
A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.02 with 99% confidence if (a) she uses a previous estimate of 0.58? (b) she does not use any prior estimates? Click the icon to view the table of critical values (a) n (Round up to the nearest Integer)
A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.02 with 90% confidence if a) she uses a previous estimate of 0.34? b) she does not use any prior estimates? a) nequals nothing (Round up to the nearest integer.) b) nequals nothing (Round up to the nearest integer.)
In a survey conducted by a reputable marketing agency, 231 of 1000 adults 19 years of age or older confessed to bringing and using the cell phone every trip to the bathroom (contessons included testing and answering phone calls Complete parts (a) tough below Click here to view the standard normal distribution table 1). Click here to view the standard romal distrution lean 21 Why is the pointestinale found in part (c) a random variable? DA being used to make...
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