Ask Question, Ask an Expert

+61-413 786 465

info@mywordsolution.com

Ask Statistics and Probability Expert

A telemarketing company wants to find out if people are more likely to answer the phone between 8pm and 9pm than between 7pm and 8pm. Out of 96 calls between 7pm and 8pm, 72 were answered. Out of 105 calls between 8pm and 9pm, 90 were answered.

Using a one-sided hypothesis test with a 90% confidence level, which of the following statements do these data support?

• There is not sufficient evidence that the proportion of people who answer the phone between 8pm and 9pm is greater than the proportion who answer the phone between 7pm and 8pm.

• People are more likely to answer the phone between 8pm and 9pm.

•  Telemarketers should not call at all during the evenings.

• People are more likely to answer the phone between 7pm and 8pm.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M9370078

Have any Question?


Related Questions in Statistics and Probability

Two pediatricians want to investigate a new laboratory test

Two pediatricians want to investigate a new laboratory test that identifies streptococcal infection. Dr. Kidd uses the standard culture test, which has a sensitivity of 90% and specificity of 96%. Dr. Childs uses the new ...

There are 3 orange balls and 17 blue balls that are in a

There are 3 orange balls and 17 blue balls that are in a bag. A person reaches into the bag, without looking, and pulls one of the balls out of the bag. What is the probability that the ball is orange?

A researcher selects from a participant pool of 8 males and

A researcher selects from a participant pool of 8 males and 11 females. He determines that the probability of selecting 2 female participants is p = .335. Based on this probability, what strategy did the researcher use t ...

A teacher started class one day by drawing the names of 10

A teacher started class one day by drawing the names of 10 students out of a hat and asked them to accomplish as much pushups as they could. The 10 randomly selected students averaged 15 pushups per person with a standar ...

The usable lifetime of a particular electronic component is

The usable lifetime of a particular electronic component is known to follow an exponential distribution with a mean of 6.2 years. Let X = the usable lifetime of a randomly selected component. (a) The proportion of these ...

Folgers has specified that the average amount of coffee

Folgers has specified that the average amount of coffee that goes into one of their small coffee cans is not to exceed 13.24 ounces. A quality control inspector for Folgers takes a random sample of 16 cans and found the ...

For the dataset38 39 41 42 42 43 43 45 45 47 50 50 51 51 53

For the dataset 38, 39, 41, 42, 42, 43, 43, 45, 45, 47, 50, 50, 51, 51, 53, 54 Without doing any calculations, estimate which of the following numbers is closest to the mean.

A certain process is known to produce non-conforming items

A certain process is known to produce non-conforming items 20% of the time. A char- acteristic of the units produced by this process are currently being monitored for quality. Samples of size 15 are selected, and each it ...

151 153 152 146 148 152 15 152 15 154157 148 154 155 149

15.1 15.3 15.2 14.6 14.8 15.2 15 15.2 15 15.4 15.7 14.8 15.4 15.5 14.9 14.9 14.9 15.3 15.5 15.4 15.1 14.7 15.1 14.6 14.7 15.2 15.4 15.4 14.5 15.5 15.1 14.8 14.9 14.6 14.6 15.4 15 15.3 15.5 14.9 15.2 15.2 15 15.1 14.7 14. ...

Suppose that 20 of men p20 and 15 of women p 15 are

Suppose that 20% of men (P=.20) and 15% of women (P= .15) are carriers of a particular genetic trait. That trait can only be inherited by a child if both parents are carriers. What is the probability that a child is born ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As