Question

In: Statistics and Probability

1- Listed below are the amounts of net worth (in millions of dollars) of the ten...

Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities in a country. Construct a

9999%

confidence interval. What does the result tell us about the population of all celebrities? Do the data appear to be from a normally distributed population as required?

251251

199199

187187

162162

157157

146146

141141

What is the confidence interval estimate of the population mean

muμ?

$nothing

millionless than<muμless than<$nothing

million

(Round to one decimal place as needed.)

What does the result tell us about the population of all celebrities? Select the correct choice below and, if necessary, fill in the answer box(es) to complete your choice.

A.We are

9999%

confident that the interval from

$nothing

million to

$nothing

million actually contains the true mean net worth of all celebrities.

(Round to one decimal place as needed.)

B.Because the ten wealthiest celebrities are not a representative sample, this doesn't provide any information about the population of all celebrities.

C.we are confident that

9999%

of all celebrities have a net worth between

$nothing

million and

$nothing

million.

(Round to one decimal place as needed.)

Do the data appear to be from a normally distributed population as required?

Yes, but the points in the normal quantile plot do not lie reasonably close to a straight line or show a systematic pattern that is a straight line pattern.

Yes, because the pattern of the points in the normal quantile plot is reasonably close to a straight line.

No, because the points lie reasonable close to a straight line, but there is a systematic pattern that is not a straight line pattern.

No, but the points in the normal quantile plot lie reasonably close to a straight line and show some systematic pattern that is a straight line pattern.

A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment,

1515

subjects had a mean wake time of

105.0105.0

min. After treatment, the

1515

subjects had a mean wake time of

80.780.7

min and a standard deviation of

20.520.5

min. Assume that the

1515

sample values appear to be from a normally distributed population and construct a

9090%

confidence interval estimate of the mean wake time for a population with drug treatments. What does the result suggest about the mean wake time of

105.0105.0

min before the treatment? Does the drug appear to be effective?

Construct the

9090%

confidence interval estimate of the mean wake time for a population with the treatment.

nothing

minless than<muμless than<nothing

min

(Round to one decimal place as needed.)

What does the result suggest about the mean wake time of

105.0105.0

min before the treatment? Does the drug appear to be effective?The confidence interval

▼

does not include

includes

the mean wake time of

105.0105.0

min before the treatment, so the means before and after the treatment

▼

are different.

could be the same.

This result suggests that the drug treatment

▼

has

does not have

a significant effect.

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest...

Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities in a country. Construct a 90% confidence interval. What does the result tell us about the population of all celebrities? Do the data appear to be from a normally distributed population as required? 241, 195, 188,171,164,154,151,151,151,146 What is the confidence interval estimate of the population mean u? $ __ million< u <$__ milion round to one decimal place as needed

Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest...

Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities in a country. Construct a 90% confidence interval. What does the result tell us about the population of all celebrities? Do the data appear to be from a normally distributed population as required? 267 198 192 169 163 153 147 147 147 147 What is the confidence interval estimate of the population mean u?

Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest...

Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities in a country. Construct a 90% confidence interval. What does the result tell us about the population of all celebrities? Do the data appear to be from a normally distributed population as required? 268 210 179 167 164 157 145 145 145 145 What is the confidence interval estimate of the population mean _____< μ? <_______ million (Round to one decimal place as...

Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest...

Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities in a country. Construct a 95% confidence interval. What does the result tell us about the population of all celebrities? Do the data appear to be from a normally distributed population as required? 247247 219219 194194 164164 156156 156156 149149 149149 149149 144144 What is the confidence interval estimate of the population mean muμ? $ millionless than<muμless than<million (Round to one decimal place...

#2. Listed below are the amounts of net worth (in millions ofdollars) of the ten wealthiest...

#2. Listed below are the amounts of net worth (in millions ofdollars) of the ten wealthiest celebrities in a country. Construct a 90% confidence interval. What does the result tell us about the population of all celebrities? Do the data appear to be from a normally distributed population as required? 264 217 191 162 161 152 150 150 150 145 What is the confidence interval estimate of the population mean u ? $------million<μ< $-------million (Round to one decimal place...

A. Listed below are the amounts (in millions of dollars) collected from parking meters by a...

A. Listed below are the amounts (in millions of dollars) collected from parking meters by a security company in your city in the previous 18 months, alongside the average amounts from another company. These data were used to convict 5 members of the security company in your city of grand larceny. Do the limited data listed here show evidence of stealing by the security company's employees – why or why not? Month: 1 2 3 4 5 6 7 8...

Listed below are paired data consisting of amounts spent on advertising (in millions of dollars) and...

Listed below are paired data consisting of amounts spent on advertising (in millions of dollars) and the profits (in millions of dollars). Determine if there is a significant negative linear correlation between advertising cost and profit . Use a significance level of 0.01 and round all values to 4 decimal places. Advertising Cost Profit 3 18 4 22 5 16 6 29 7 24 8 31 9 22 10 29 11 25 Ho: ρ = 0 Ha: ρ < 0...

Listed below are paired data consisting of amounts spent on advertising (in millions of dollars) and...

Listed below are paired data consisting of amounts spent on advertising (in millions of dollars) and the profits (in millions of dollars). Determine if there is a significant positive linear correlation between advertising cost and profit . Use a significance level of 0.01 and round all values to 4 decimal places. Advertising Cost Profit 3 23 4 29 5 28 6 21 7 29 8 32 9 21 Ho: ρ = 0 Ha: ρ > 0 Find the Linear Correlation...

Listed below are paired data consisting of amounts spent on advertising (in millions of dollars) and...

Listed below are paired data consisting of amounts spent on advertising (in millions of dollars) and the profits (in millions of dollars). Determine if there is a significant linear correlation between advertising cost and profit . Use a significance level of 0.01 and round all values to 4 decimal places. Advertising CostProfit 323 422 523 626 723 825 919 1025 1133 Ho: ρ = 0 Ha: ρ ≠ 0 Find the Linear Correlation Coefficient r = Find the p-value p-value...

1. Listed below are the budgets (in millions of dollars) and the gross receipts (in millions...

1. Listed below are the budgets (in millions of dollars) and the gross receipts (in millions of dollars) for randomly selected movies. . Budget (x) 64 87 47 31 199 99 85 Gross (y) 67 60 49 56 630 143 47 Find the value of the linear correlation coefficient r. 2. For a sample of eight bears, researchers measured the distances around the bears' chests and weighed the bears. Calculator was used to find that the value of the linear...

Subjects

Question

1- Listed below are the amounts of net worth​ (in millions of​ dollars) of the ten...

Solutions

Expert Solution

Related Solutions

1- Listed below are the amounts of net worth (in millions of dollars) of the ten...