B In Problems 15 and 16 , explain which of ( A ), ( B ), and ( C ) are equal before evaluating the expressions. Then evaluate each expression to two decimal places. 16. (A) ∫ 0 10 2 , 000 e 0.05 t e 0.12 ( 10 − t ) d t (B) 2 , 000 e 1.2 ∫ 0 10 e − 0.07 t d t (C) 2 , 000 e 0.05 ∫ 0 10 e 0.12 ( 10 − t ) d t
B In Problems 15 and 16 , explain which of ( A ), ( B ), and ( C ) are equal before evaluating the expressions. Then evaluate each expression to two decimal places. 16. (A) ∫ 0 10 2 , 000 e 0.05 t e 0.12 ( 10 − t ) d t (B) 2 , 000 e 1.2 ∫ 0 10 e − 0.07 t d t (C) 2 , 000 e 0.05 ∫ 0 10 e 0.12 ( 10 − t ) d t
Solution Summary: The author evaluates the expression 2,000e(0.05t)E0.12 (10-t
BIn Problems 15 and 16, explain which of (A), (B), and (C) are equal before evaluating the expressions. Then evaluate each expression to two decimal places.
16. (A)
∫
0
10
2
,
000
e
0.05
t
e
0.12
(
10
−
t
)
d
t
Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week. A sample of 65 weekly reports showed a sample mean of 19.5 customer contacts per week. The sample standard deviation was 5.2. Provide 90% and 95% confidence intervals for the population mean number of weekly customer contacts for the sales personnel.
90% Confidence interval, to 2 decimals:
( , )
95% Confidence interval, to 2 decimals:
A simple random sample of 40 items resulted in a sample mean of 25. The population standard deviation is 5.
a. What is the standard error of the mean (to 2 decimals)?
b. At 95% confidence, what is the margin of error (to 2 decimals)?
Chapter 6 Solutions
Pearson eText for Calculus for Business, Economics, Life Sciences, and Social Sciences, Brief Version -- Instant Access (Pearson+)
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