Start your trial now! First week only $4.99!*arrow_forward*

Question

The times ( in seconds) for a sample of seven sports cars to accelerate from 0 to 60 miles per hour are as follows:

3.8 4.0 4.8 4.7 4.8 5.1 4.8

How many standard deviation is 3.8 away from the mean of the sample?

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: Another type of confidence interval is called a one-sided confidence interval. A one-sided confidenc...

A: Given dataTotal sample size = 1039sample mean(x̅) = 704.00sample standard deviation = 477.9895% conf...

Q: Precisely what is meant by the statement that a population is normally distributed?

A: Generally data comes from different sources might be biased towards a particular property. It could ...

Q: Change for a Quarter How many different ways can you make change for a quarter? (Different arrangeme...

A: The number of coins that are less than a quarter in terms of money is three. They arePenny ($0.01)Ni...

Q: The distribution of systolick blood pressure of 19-year old women is approximantely bell shaped with...

A: Empirical Rule: The percentage of values lies between one standard deviation from the mean is 68%.Th...

Q: Explain why increasing the sample size tends to result in a smaller sampling error when a sample mea...

A: Sampling error:When a sample is used to estimate a population characteristic, the error resulting is...

Q: Consider the normal curves that have the parameters µ = 1.5 and σ = 3; µ = 1.5 and σ = 6.2; µ = -2.7...

A: Justification:The spread is represented by standard deviation (σ). If the value of the standard devi...

Q: A simple random sample of size 17 is taken from a population with unknown standard deviation. A norm...

A: The following assumptions are required for the small sample confidence interval about mean to be val...

Q: Identify the two types of incorrect decisions in a hypothesis test. For each incorrect decision, wha...

A: There are two types of errors in Hypothesis testing. They are,Type I error:Probability of rejecting ...

Q: A confidence interval for a population mean has a margin of error of 10.7. a. Obtain the length of t...

A: From the given question,It is given that a confidence interval for a population mean has a margin of...

Q: Table IV in Appendix A contains degrees of freedom from 1 to 75 consecutively but then contains only...

A: a)The entries for all possible degrees of freedom are not provided because we can determine the t v...

Q: Sketch the normal distribution with a. µ = 3 and σ = 3.b. µ = 1 and σ = 3.c. µ = 3 and σ = 1.

A: a.The normal distribution with is,

Q: Mortgage Industry Employees. In an issue of National Mortgage News, a special report was published o...

A: a)Step-by-step procedure to obtain the normal probability plot using the MINITAB software:Choose Gra...

Q: Blood Pressure Medication. A medical researcher wants to determine factors that affect a patient’s r...

A: (a)Justification:Response variable:Response variable in a regression equation is the dependent varia...

Q: What does the probability distribution of a discrete random variable tell you?

A: The discrete random variable is obtained by counting values for which there are no in-between values...

Q: Diamond Pricing. In a Singapore edition of Business Times, diamond pricing was explored. The price o...

A: a).It is given that,Sample mean = $1,964.7.Sample standard deviation, s is $206.5.The sample size, n...

Q: What number commonly represents false ?

A: Logic operations include any operations that manipulate Boolean values. Boolean values are either tr...

Q: Notation Assume that we want to find the probability that when five consumers are randomly selected,...

A: According to given information:

Q: ow old are professional football players? The 11th Edition of The Pro Football Encyclopedia gave the...

A: The descriptive statistics are calculated in EXCEL. The software procedure is as follows.Enter the d...

Q: Random Variable The accompanying table lists probabilities for the corresponding numbers of girls in...

A: Let X be the random variable which represent the number of girls born in four biths.

Q: Answer true or false to the following statement, and give a reason for your answer: If a 95% confide...

A: It is given that the 95% confidence interval for a population mean is from 33.8 and 39.0.

Q: Suppose x1 and x2 are predictor variables for a response variable y. a. The distribution of all poss...

A: a.Yes, the distribution of all possible values of the response variable corresponding to particular ...

Q: List the three requirements for repeated trials of an experiment to constitute Bernoulli trials.

A: The conditions for repeated trials of an experiment to be a Bernoulli trial are,The trials of the ex...

Q: Does the sample size have an effect on the standard deviation of all possible sample means? Explain ...

A: Sampling distribution of a sample mean:

Q: Sampling Eye Color Based on a study by Dr. P. Sorita Soni at Indiana University, we know that eye co...

A: a.Convenience sampling:Convenience sample is taken by using subjects that are easily available for c...

Q: In Exercises, we have given the value obtained for the test statistic, z, in a one-mean z-test. We h...

A: a).The p-value can be obtained by entering the formula “=1-NORM.S.DIST(1.24,TRUE)” in Excel:

Q: A simple random sample is taken from a population and yields the following data for a variable of th...

A: Point estimate:Point estimate is the single value obtained from point estimation on a set of sample ...

Q: A and B are events such that P(A) = 0.4,P(B) = 0.5, and P(A&B) = 0.2. Answer each question and e...

A: a.Mutually Exclusive Events:Two events are said to be mutually exclusive if they cannot occur at the...

Q: How do I get or read the 6 charachteristics of data from a box and whisker graph

A: Generally, Box and whisker plot is used for descriptive analysis. That is, for primary analysis of d...

Q: What is another name for the standard deviation of the variable x? What is the reason for that name?

A: Click to see the answer

Q: Express the k th percentile, Pk , of a normally distributed variable in terms of its mean, µ, and st...

A: The kth percentile represents the area of k to the left of z.

Q: In each of Exercises, we provide a sample mean, sample size, sample standard deviation, and confiden...

A: a.Given information:

Q: In each of Exercises, assume that the population standard deviation is known and decide whether use ...

A: The following assumptions are required for the large sample confidence interval about the mean to b...

Q: Which provides stronger evidence against the null hypothesis, a P-value of 0.06 or a P-value of 0.04...

A: Decision criterion:If the p-value of the test is less than or equal to the level of significance, re...

Q: VerbalGREScores. The Graduate Record Examination (GRE) is a standardized test that students usually ...

A: a.The 25th percentile is which is first quartile can be calculated as:Area corresponding to z score ...

Q: Data was collected for 300 fish from the North Atlantic. The length of the fish (in mm) is summarize...

A: The data is provided for the length (in mm) of 300 fish from the North Atlantic.From the provided gr...

Q: Does the sample size have an effect on the mean of all possible sample means? Explain your answer.

A: It is known that expected value of the sample mean is an unbiased estimator of the population mean.

Q: Suppose that, in a hypothesis test, the null hypothesis is in fact true. a. Is it possible to make a...

A: Type I error:Probability of rejecting the null hypothesis when it is actually true.Type II error:Pro...

Q: The maintenance department at the main campus of a large state university receives daily requests to...

A: Empirical rule:68% of all possible observations lie within one standard deviation from the mean.95% ...

Q: Why is obtaining the mean and standard deviation of xa first step in approximating the sampling dist...

A: Sampling distribution of a sample mean:

Q: What is the inverse of p -->q

A: Click to see the answer

Q: decimal equivalent to 3/2pi

A: Note:Hey there! Thank you for posting the question. For the calculation we are considering given val...