A consumer agency has retained an independet testing firm, Ask an Expert

Statistics

1. A consumer agency has retained an independet testing firm to examine a television manufacturer's claim that its 25-inch console lmodel consumes just 110 watts of electricity. Based on a preliminary study, the population standard deviation has been estimated as 11.2 watts for these sets. In undertaking a larger study, and using a simple random sample, how many sets must be tested for the firm to be 95% confident that its sample mean does not differ from the actual population mean by more than 3.0 watts?

2. For each of the following pairs of null and alternative hypotheses, determine whether the pair would be appropriate for a hypothesis test. If a pair is deemed inappropriate explain why?

a. Ho:II>0.30, H1:II<0.35

b. Ho:II= 0.72 H1:II=0.72

c. HO:II < 0.25 H1: II > 0.25

d. Ho: II > 0.48 H1: II > 0.48

e. Ho: II < 0.70 h1: II > 0.70

f. Ho:p > 0.65 H1:p < 0.65

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9391514

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

A box contains 14 large marbles and 11 small marbles each

A box contains 14 large marbles and 11 small marbles. Each marble is either green or white. 8 of the large marbles are green, and 5 of the small marbles are white. If a marble is randomly selected from the box, what is t ...

You are leasing a car for 48 months you put down 2000 now

You are leasing a car for 48 months. You put down $2000 now and agree to $500 monthly payments. The residual value is $15,000. The financing rate is 8% (monthly compounded). How much is the car worth?

A mortgage broker is offering a 188900 20-year mortgage

A mortgage broker is offering a $188,900 20-year mortgage with a teaser rate. In the first two years of the mortgage, the borrower makes monthly payments on only a 4.5 percent APR interest rate. After the second year, th ...

Te proportion of people who love dogs is known to be 75

The proportion of people who love dogs is known to be 75 % Australia wide. A town in far north Queensland is often different in many aspects to the rest of Australia. When 88 families were sampled the proportion who love ...

In a recent year 8415394 male students and 4879215 female

In a recent year, 8,415,394 male students and 4,879,215 female students were enrolled as undergraduates. Receiving aid were 62.9% of the male students and 68.3% of female students. Of those receiving aid, 41.9% of the ma ...

The mean throwing distance of a football for a luis a high

The mean throwing distance of a football for a Luis, a high school freshman quarterback, is 50 yards, with a standard deviation of three yards. The team coach tells Luis to adjust his grip to get more distance. The coach ...

A doctor wants to predict the birth weight of a newborn

A doctor wants to predict the birth weight of a newborn baby (measured in grams) based on the gestational age (measured in weeks) at the time of birth. The doctor uses 11 data points, with births ranging from 29 weeks to ...

1 suppose that in the game of afl the mean total number of

1. Suppose that in the game of AFL the mean total number of points per match is 185 with a standard deviation of 33. Suppose that a season involves 202 matches. If the total points are normally distributed then answer th ...

An important part of the customer service responsibilities

An important part of the customer service responsibilities of a cable company relates to the speed with which trouble in service can be repaired. Historically, the data show that the likelihood is 0.75 that troubles in a ...

Given the following values 20 m 16 07 conduct a

Given the following values: = 20, M = 16, = 0.7, conduct a one-sample z test at a .05 level of significance. What is the decision for a two-tailed test? A) to reject the null hypothesis B) to retain the null hypothesis C ...

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

Recent Questions

Ask Statistics and Probability Expert