Fall 2017 Math 1342 Onine August Flex Quiz: Chapter 7 Review Quiz 3 of 7 This Qu

Question

Fall 2017 Math 1342 Onine August Flex Quiz: Chapter 7 Review Quiz 3 of 7 This Quiz: 7 pts p o approximately follows a normal dstribution, with a mean of 17 minutes and a standard deviation of 2 minutes he a entive certe garanties customers that the service wil take no lor ger han 20 half-price? (b) if the anomedve center does not want to pe the doorn to more than 5% minutes If does take longer the customer will receive the senice for half-price what percent of customers receive the service fo of its customers, how long should it make the gaaranteed time imit? Round to two decimal places as needed) (b) The guaranteed tine Int ismmtes Rund up to the nearest integer as needed )

Explanation / Answer

a)

P(X >20)

P(Z >(20 - 17)/2)

=P(Z > 1.5)

= 0.0668

hence 6.68 %

b)

P(Z> z*) = 0.05

z* = 1.645

hence

time = 17 + 1.645 *2

=   20.29

Please rate

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.