Shorney construction company bids on projects assuming that the mean idle time perworker is 72 or fewer minutes per day. a sample of 30 construction workers will be usedto test this assumption. assume that the population standard deviation is 20 minutes.a. State the hypotheses to be tested.b. what is the probability of making a type ii error when the population mean idle timeis 80 minutes?c. what is the probability of making a type ii error when the population mean idle timeis 75 minutes?d. what is the probability of making a type ii error when the population mean idle timeis 70 minutes?e. Sketch the power curve for this problem

Question

Shorney construction company bids on projects assuming that the mean idle time per
worker is 72 or fewer minutes per day. a sample of 30 construction workers will be used
to test this assumption. assume that the population standard deviation is 20 minutes.
a. State the hypotheses to be tested.
b. what is the probability of making a type ii error when the population mean idle time
is 80 minutes?
c. what is the probability of making a type ii error when the population mean idle time
is 75 minutes?
d. what is the probability of making a type ii error when the population mean idle time
is 70 minutes?
e. Sketch the power curve for this problem

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Hypothesis Testing

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: For each of the following, indicate the scale of measurement that best describes the information.a. ...

A: a.

Q: Can you get all possible shuffles of a stack of n cards by using a sequence of riffle shuffles? Plea...

A: Here's the explanation as follows; Take note that , riffle shuffle is also known as the Faro shuffle...

Q: Given the survival function S0(x)=exp(-0.001 x2), x≥ 0, find p20.

A: From provided information, the survival function is: S0(x) = exp (-0.001 x2), x ≥ 0 The relationship...

Q: The mean score on this test is: The midrange of scores on this test is:

A: Click to see the answer

Q: Suppose that you want to estimate the mean time it takes drivers to react following the application ...

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to ou...

Q: Roulette. An American roulette wheel contains 38 numbers, of which 18 are red, 18 are black, and 2 a...

A: The roulette wheel contains 38 numbers and 18 of them are red, 18 of them are black and 2 are green....

Q: The number of credits registered by a group of students as follows. a. Find the mean and the median....

A: Given information- a) We have given 5 data set. 15 19 14 17 16 15 Here I am using excel for calculat...

Q: Another P-value Have harsher penalties and ad cam-paigns increased seat-belt use among drivers and p...

A: Click to see the answer

Q: What is Population Standard Deviation?

A: Click to see the answer

Q: Eighty pilots were tested in a flight simulator andthe time for each to take corrective action for a...

A: Given information: Total number of pilots included in the sample, n = 80 In the given set of data, M...

Q: The random variable x is known to be uniformly distributed between 1.0 and 1.5.a. Show the graph of ...

A: Click to see the answer

Q: A population has the characteristics below. (a) A total of 60% of the population survives the first ...

A: The population now consists of 100 members in each of the three age classes.  The age distribution v...

Q: The graph illustrates the distribution of test scores taken by College Algebra students. The maximum...

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want solution...

Q: How many possible samples of size 5 are possible from a population of size 70?

A: Combination Rule: The arrangement of r objects from n different objects is given by:

Q: Majesty Video Production Inc. wants the mean length of its advertisements to be 30 seconds. Assume t...

A: Given:  µ = 30,  σ = 2 and    n= 16         Sampling error  (e) is the difference between the sample...

Q: A normal distribution has a mean of 108 and a standard deviation of 6. Find the z-score for a data v...

A: Click to see the answer

Q: Here is a data set summarized as a stem-and- leaf plot: 3# | 12347788 4# | 01234566667889 5# | 04788...

A: The stem and leaf given above is as follows Key: 3|1 = 31

Q: Students at a university have a bell shaped distribution with a mean of 2.61 and a standard deviatio...

A: Click to see the answer

Q: Research study comparing alcohol use for college students in the United States and Canada reports th...

A:  

Q: Four hundred fifty people were surveyed as they left the FSU-Virginia basketball game at the Tucker ...

A: Drawing the Venn Diagram using the given data:   

Q: A high school baseball player has a 0.273 batting average. In one game, he gets 9 at bats. What is t...

A: Click to see the answer

Q: Actors Stems Actresses 2 146667 98753221 3 0011334445577 88776543322100 4 11129 6651 5

A: The data from the stem and leaf plot for the actors can be read as: 31, 32, 32, 33, 35, 37, 38, 39, ...

Q: A four-way factorial design has Factor A at 2 levels, Factor B at 2 levels, Factor  C at 4 levels, a...

A: Given information, A four-way factorial design has Factor A at 2 levels, Factor B at 2 levels, Facto...

Q: Hungry? Researchers investigated how the size of abowl affects how much ice cream people tend to sco...

A: Note: Hey there! Thank you for the question. We have used TI-83 calculator to solve the problem.   a...

Q: A chi-square independence test is to be conducted to decide whether an association exists between tw...

A: The degrees of freedom = (r-1) ×(c-1), where r is the number of rows and c is the number of columns.

Q: 1. How many people carried a cell phone or a tablet? 2. How many people carried neither a cell phone...

A: Click to see the answer

Q: In a normal distribution, percent of the data are above the mean, and percent of the data are below ...

A: Empirical rule: For a normal distribution, the approximate values that fall in the specified interva...

Q: A dinner club has 30 members. At a particular dinner, every club member gets to order exactly3 diffe...

A: Introduction: According to the combination rule, if r distinct items are to be chosen from n items w...

Q: Suppose that A and B are events such that P(A) = 1/4, P(B) = 1/3, and P(A or B) = 1/2. a. Are events...

A: Click to see the answer

Q: Answer true or false to each of the following statements and explain your answers. a. A polynomial r...

A:  a. Difference in centered and uncentered polynomial regression equation: A centered polynomial regr...

Q: Describe about the Confidence Interval for μD.

A: Correlated samples t test or paired t test or repeated measures t test: The paired t is used when th...

Q: Hormone Therapy and Dementia. An issue of Science News (Vol. 163, No. 22, pp. 341–342) reported that...

A: a) The hypotheses are given below: Null hypothesis: H0:p1=p2 Alternative hypothesis: H1:p1>p2 Tes...

Q: Describe the EFFECT OF SAMPLE SIZE.

A: In general, large sample size is required to get more precision of data. Sample size plays important...

Q: Define autoregressive–moving average (ARMA) model?

A: Click to see the answer

Q: Explain mean, medium and mode. Give a real life example of how you would use each in your daily life...

A: Note: Hi there! Thank you for posting the question. As there are several independent questions, acco...

Q: The following table represents gas well completions during 1986 in North and South America. Source: ...

A: From the given information, the below table shows the gas well completions during 1986 is,       ...

Q: The probability density of the random variable Z isgiven by f(z) = kze−z2for z > 00 for z F 0Find...

A: The required value is calculated as follows:

Q: You would like to estimate the mean price of milk (per gallon) in your city. You select a random sam...

A: Introduction: A z-test is suitable to use, when the population standard deviation is known, and eith...

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z...

A: We know that, Z-Score is given by, where, X is a random variable.

Q: Suppose that we want to estimate the mean score on a nationwide examination in anthropology, and for...

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for y...

Q: Decide whether or not the two events in question are independent or whether it is not possible to te...

A: Click to see the answer

Q: What is Point Estimate?

A: Click to see the answer

Q: We collected the heights of 50 tomato plants measured in meters, to the nearest cen-timeter 1.52,1.7...

A: Click to see the answer

Q: Local news The mayor of a small city has suggested that the state locate a new prison there, arguing...

A: Click to see the answer

Q: If A and B are mutually exclusive, P(A) = 0.37, andP(B) = 0.44, find(a) P(A); (b) P(B ); (c) P(A ∪ B...

A: Note: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you...

Q: n advantage of statistical sampling over nonstatistical sampling methods is that statistical methods...

A: Since non-statistical sampling is cheaper and easier, we can actually explore non-statistical sampli...

Q: Salary An employer pays a mean salary for a 5-dayworkweek of $1250 with a standard deviation of $129...

A: The mean salary of an employee for the 5 day work week is $1,250 and the standard deviation is $129....

Q: John is interested in the number of children per household for house-holds in Tyler, TX. He conducts...

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to ou...

Q: The bar graph below summarizes information aNew York City Survey of Elementary School Children(NYC D...

A: If X is the number of children among 400 Hispanic NYC school children that are obese,then X~Bin(400,...

Q: John Wayne Like a lot of other Americans, John Waynedied of cancer. But is there more to this story?...

A: Click to see the answer