subject
Mathematics, 14.10.2019 08:01 trinityparker

Arecent survey found that 73% of all adults over 50 wear sunglasses for driving. in a random sample of 20 adults over 50, what is the mean and standard deviation of those that wear sunglasses?

show your work! !

a) mean: 5.4; standard deviation: 1.98544705

b) mean: 14.6; standard deviation: 3.82099463

c) mean: 5.4; standard deviation: 3.82099463

d) mean: 14.6; standard deviation: 1.98544705

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 17:00
Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?
Answers: 1
question
Mathematics, 21.06.2019 19:50
Is it greater than or less than7*3_9*2
Answers: 2
question
Mathematics, 21.06.2019 22:00
Match the scale and the actual area to the area of the corresponding scale drawing. scale: 1 inch to 4 feet actual area: 128 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 5 feet actual area: 225 square feet area of scale drawing scale and actual area scale drawing area: 3 square inches arrowright scale drawing area: 8 square inches arrowright scale drawing area: 4 square inches arrowright scale drawing area: 9 square inches arrowright
Answers: 2
question
Mathematics, 22.06.2019 00:00
The graph shows the amount of money noah earned based on the number of lawns he cut. which list shows the dependent quantities in the graph?
Answers: 3
You know the right answer?
Arecent survey found that 73% of all adults over 50 wear sunglasses for driving. in a random sample...
Questions
question
Mathematics, 19.03.2021 18:10
question
Mathematics, 19.03.2021 18:10
question
English, 19.03.2021 18:10
Questions on the website: 13722363