Question

The average time taken for your Internet service provider to remotely resolve a trouble ticket has a Normal distribution, with a mean of 4.3hours and a standard deviation of 3.1 hours. What percent of the time can you expect to wait longer than a full (8-hour) business day for a resolution?

 

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

Measures

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: Which criterion is used for deciding which regression line fits best?

A: Least-squares property: If the sum of the squares of the residuals is expressed as smallest sum poss...

Q: Naini, Cobourne, McDonald and Donaldson (2008) reported that a specific ratio of height to face leng...

A: According to the provided data, it is reported that a specific ratio of height to face length of 1 t...

Q: A researcher was interested in the relationship between a swimmer’s hand length and corresponding ti...

A: Given information- Significance level, α = 5% Sample size, n = 20 We have to test that a longer hand...

Q: A bag contains 46 U.S. quarters and four Canadian quarters. (The coins are identical in size.) If si...

A: Click to see the answer

Q: The Goodman Tire and Rubber Company periodically tests its tires for tread wear under simulated road...

A: By using EXCEL

Q: Suppose you are asked to design a product for operation at extremely low temperatures. You know that...

A: According to the provided data, x be the temperature (Kelvin) and y be the length (mm). Excel is use...

Q: How do I solve this and detemine what a test statistic is? Please show the steps and explain! In a r...

A: Given that, 33​%of employed U.S. adults reported that basic mathematical skills were critical or ver...

Q: Set up, but do not evaluate, an integral that will yield the density of Z = X + Y, where X and Y are...

A: The probability density function of standard normal distribution is as follows:

Q: Find the Confidence interval for the true Population Mean if a sample of 50 has a mean of 26.8 and a...

A: Click to see the answer

Q: Use the output below to test to see if there is a significant positive linear relation between heigh...

A: State the hypothesis. That is, there is no significant positive linear correlation between the two ...

Q: Two cards are drawn from a standard deck without replacement. What is the probability that the first...

A: A standard deck contains a total of 52 cards out of which 26 are red and 26 are black. The number of...

Q: Do a hypothesis for the following, make sure to include and label all five steps:             Test ...

A: Click to see the answer

Q: Identify the pvalue, test statistics, and confidence interval

A: Hypotheses and level of significance: The hypotheses to be tested are: Null hypothesis: H0: μd = 0. ...

Q: An online site presented this​ question, "Would the recent norovirus outbreak deter you from taking ...

A: It is given that n=43744. The sample proportion is 0.66 Consider the confidence interval as 95%, the...

Q: The accompanying data represent the miles per gallon of a random sample of cars with a three-cylinde...

A: Click to see the answer

Q: a) Write an integral expression for the moment generating function M(t). b) Evaluate the integral to...

A: a) Provide an integral expression for the moment generating function M(t). It is known that X is a c...

Q: A researcher obtains a Pearson correlation of r=0.60 for a sample of n=6 pairs of X and Y scores. if...

A: It is given that Pearson correlation (r) is 0.60 and sample size (n) is 6.

Q: b) What is the variance of Xn? E) Use your answer to part (b), and Chebyshev's inequality, to come u...

A: b)

Q: Two samples are taken with the following numbers of successes and sample sizesr1r1 = 21 r2r2 = 29n1n...

A: Click to see the answer

Q: Illustrate the Partition sum of squares Y into sum of squares predicted and sum of squares error?

A: Click to see the answer

Q: An unknown metal has been found and the following experimental results have been tabulated in the ta...

A: Click to see the answer

Q: A random sample of eight drivers insured with a company and having similar auto insurance policies w...

A: From the given information, a sample of driver experience and monthly auto insurance premium are col...

Q: For healthy individuals, between 18 and 48, the mean heart rate is 60 beats per minute (bpm) with a ...

A: Calculating the probability: The heart rates have a mean 60 and standard deviation 10. Let X denotes...

Q: Suppose that a random variable ?z has a standard normal distribution. Use a standard normal table su...

A: P((−1<z<0.67)=?  

Q: A set of n=5 pairs of X  and Y has SSx=16, SSy=4 and SP=2. for these data , what is the Pearson corr...

A: Click to see the answer

Q: Select all of the following choices that are possible confidence intervals on the population value o...

A: The notation r represents the statistic, which is the value of the linear correlation coefficient us...

Q: A simple random sample of 25 filtered 100 mm cigarettes is​ obtained, and the tar content of each ci...

A: Click to see the answer

Q: Given that 33.6% of all possible observations of the very bar less than 10 determine the area under ...

A: Click to see the answer

Q: Suppose that average male weight in the US is 175 pounds with a standarddeviation of 25 pounds. Supp...

A: It is given that population mean µ=175 pounds, population standard deviation σ=25 pounds. Sample siz...

Q: (a) Find ?z such that the proportion of observations that are less than z in a standard normal distr...

A: a) P(Z<z)= 0,29 z=? From standard normal table, P(Z<-0.55)=0.29   Therefore z=-0.55  

Q: A random variable r is normally distributed with a mean of five and a standard deviation of 2.5  a) ...

A: Procedure for finding the critical value of z is listed below: Follow the instruction to obtain the ...

Q: The score on an exam from a certain statistics class, XX, is normally distributed with μ=81.2μ=81.2 ...

A: Solution: a. Let X be the score of an exam from a certain statistics class. From the given informati...

Q: A pair of dice is tossed. Find the probability that the sum on the 2 dice is 8, given that doubles a...

A: Obtain the probability that the sum on the 2 dice is 8, given that doubles are rolled. The probabili...

Q: I'm confused on how to do these.

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any sp...

Q: Set up, but do not evaluate, an integral that will yield the density of Z = X + Y, where X and Y are...

A: The probability density function of standard normal distribution is as follows:  

Q: A process that is in control has a mean of mu=12 and a standard deviation of 0.4. a. Construct an x ...

A: Click to see the answer

Q: The lifetime for a certain brand of incandescent light bulbs is normally distributed with a mean lif...

A: Click to see the answer

Q: i want to solve it in 20 minutes please

A: From the provided information,

Q: You are at a carnival and walk by the “Guess the Weight” game booth. Today’s item is a basket of pum...

A: Click to see the answer

Q: What is the Expected Population Error Rate?

A: Click to see the answer

Q: A simple random sample of size three x1, X, and x3 is drawn from a population with mean u and varian...

A: From the given information, 1) An estimator are said to be unbiased if E(x) =µ. Hence, it is biase...

Q: According to a survey by the Consumer Reports National Research Center of 1003 adults, 542 adults we...

A: Denote p as the true proportion of the adults who are annoyed by food that not look or taste as desc...

Q: A researcher is interested in the relationship between time spent browsing items in an online store ...

A: Click to see the answer

Q: 2- What is the Difference between linear regression and multiple regression analysis?

A: From the given information we need to observe the difference between linear regression and multiple ...

Q: You wish to test the following claim (HaHa) at a significance level of α=0.002α=0.002. For the conte...

A: The appropriate Null and Alternative Hypotheses are given below:   Null hypothesis:   H0: µd=0.   Al...

Q: Determine whether the events are independent.Numbers are written on slips of paper in a hat; one per...

A: Independent events: If the occurrence of event A doesn’t affect the occurrence of event B, then even...

Q: Birth weights at a local hospital have a Normal distribution, with a mean of 110110 oz and a standar...

A: Click to see the answer

Q: The Denver Post stated that 80% of all new products introduced in grocery stores fail (are taken off...

A: Solution: From the given information, the probability that all the new products in grocery fail is 0...

Q: Tests for the adverse reactions to a new drug yielded the results given in the table. At the 0.05 si...

A: State the test hypotheses. Null hypothesis: H0: Treatment is independent of reaction. Alternative hy...