Answered: Grades in an exam have a mean of 60 and…

Grades in an exam have a mean of 60 and a standard deviation of 10. What is the probability that the average grade for n=100 students will be greater than 61 ?( Round to two decimal places)

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.CR: Chapter 13 Review

Problem 58CR

See similar textbooks

Related questions

Q: Part 1 Let σ denote population standard deviation of the pulse rates of women (in beats per…

A: Given that Sample size n =144 Sample standard deviation s=13.9 Population standard deviation=10…

Q: Find the mean, variance, and standard deviation of the binomial distribution with the given values…

A: Given that : n=80, p=0.3 By using binomial distribution we solve this problem.

Q: What is the P-value for the following scenario? A researcher claims that a post-lunch nap improves…

Q: (Round to three decimal places as needed.) Part 2 b) Identify the value of the margin of error E.…

A: We have given that, X = 594 and n = 919 Then, We will find the point estimate of p and margin of…

Q: random sample of 40 college students has mean annual earnings of $3,245 and a standard deviation of…

A: Given that ; n = 40 ? = $ 567 Sample mean = $ 3245 At 99% confidence interval By using the…

Q: Suppose X and Y are independent random variables. X is uniformly distributed on (0, ) and Y is…

Q: Use the given data to find the equation of the regression line. Examine the scatterplot and identify…

A: Given information: x y X^2 Y^2 XY 14 19.64 196 385.7296 274.96 8 15.5 64 240.25 124 10…

Q: Babies: According to a recent report, a sample of 300 one-year-old baby boys in the United States…

A: Explanation:in this the answer is should In step2 the clearly writed

Q: In the equation: Test Score = 607.3 + 3.85Income – 0.04231ncome² %3D Given the level of income, the…

A: Given Test score =607.3+3.85Income-0.0423Income^2 is an inverted parabola and vertex is the maximum…

Q: Empirnal Ruk po oumal for Diatrisutions is simlan to Chelysheu's Thuorem.

A: Chebyshev's theorem provides a general idea about the dispersion of all the distributions, whereas…

Q: Construct a 99.8% confidence interval for the proportion of women who work at home who are college…

A: Given,n=519x=165p^=xnp^=165519=0.318The point estimation for the proportion is 0.318 .

Q: In the digital age of marketing, special care must be taken to ensure that programmatic ads appear…

A: For the given data Perform Anova: Single Factor

Q: Name: 4. For a normal distribution with u = 500 and o= 100, find the following values. ID: A %3D d.…

Q: The following logit model from J.S Cramer on the household budget survey 980 was based on a sample…

A: Null Hypothesis: H0: The car ownership is not significantly estimated by the income. Alternative…

Q: Q. 27 What are thẹ various methods available for computing seasonal variations in time series ?

Q: 2013428709x0134287098

A: According to the given information in this question We need to multiply these numbers

Q: %3D ху xy-(x)7) m = x²- x²y²-xxy b = x²-g2 y XX ху 1 4.6 2 7.1 1 7.1 3 2 9.5 4 19 4 3 11.5 34.5 5 4…

A: Solution-: We have following table: n xi yi xi*xi yi*yi xi*yi 1 0 4.6 0 21.16 0 2 1 7.1 1…

Q: An initial claim based on previous analyses, which the researcher tries to disprove, reject, or…

A: We have given that the statement about to the hypothesis. Here, need to find out that the correct…

Q: Which statement is not correct for multiple regression model?

A: Multiple regression is an extension of the simple regression model.

Q: Find the equation of the regression line for the given data. Then construct a scatter plot of the…

A: Note: According to Bartleby expert guidelines, we can answer only first question with their three…

Q: Consider the time series data in the table below (a-c all count as one problem) a. Construct a time…

Q: Sleeping outlier: A simple random sample of elght college freshmen were asked how many hours of…

A: In question, We have given data set, 8.5, 24, 8.5, 8, 7.5, 9, 6.5, 6 Then, we'll find the 99%…

Q: 2. A pharmaceutical company claims that their pill relieves heartburn in over 90% of the people who…

A: Given that, a pharmaceutical company claims that their pill relieves heartburn in over 90% of the…

Q: R A researcher found that the IQ scores of the ALS students in the Division of Pangasinan II are…

A: For estimating the true IQ score in the form of an interval, the confidence interval (CI) is to be…

Q: Question 6 Winston, a dog, loves to play fetch. He catches each ball mid-air independently with…

A: Let X be the Random variable from binomial distribution with probability (p) = 0.4 and sample size…

Q: Determine the critical value zα/2 that corresponds to the given level of confidence, rounding to…

Q: A psychology professor studies the relationship between anxiety(X) and test performance (Y). Ten…

Q: A civil engineering student has delivered a cylinder of concrete for the "concrete strength…

A: Let the random variable X denotes the strength of the student's concrete cylinder. Given that…

Q: Test of p = 0.1 vs p * 0.1 Sample Z-Value P-value 0.0027 Sample 95% CI (0.113, 0.267) 19 100 3.00…

A: We have given that P-value = 0.0027 Significance level = 5% = 0.05

Q: A research study recruited 32 adolescent patients with Type 1 diabetes. In random order, each…

A: For the given data Which test is most appropriate for this scenario?

Q: Q4) For a controlled operation on a lathe, a particular dimension of 55 + 0.25 mm. Samples of five…

A: Relative Precision Index is the interval difference between the upper specification limit and the…

Q: The pie chart shows the distribution of the opinions of parents on whether a college education is…

A: For the given data Perform Chi square goodness of fit

Q: How many commuters should be included in the sample? Assume a pilot sample gives an estimate of $30…

A: We have given that Margin of error, E = 2 Population standard deviation = 30 Significance level =…

Q: A surprising number of young adults (ages 19 to 25) still live in their parents' homes. A random…

Q: TV advertising agencies face increasing challenges in reaching audience members because viewing TV…

Q: without school-aged children that would support starting the school year a week earlier. The P-value…

A: It is given that P-value = 0.000034 Level of significance = 0.05

Q: Scores on a digit span task were obtained from two groups of 20 participants (40 in total) whose…

A: We have given that M= 9.2 M: 6.8

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

Q: small liberal arts college in the Northeast has 350 freshmen. 105 of the freshmen are education…

A: Given that, a small liberal arts college in the Northeast has 350 freshmen. 105 of the freshmen are…

Q: Continuation Calculate the median. 144.45

Q: 1. Consider a very small, hypothetical dataset for two groups: Group-A : 20, 30, 40 Group-B : 35, 45…

A: Note: We have not been specified how many elements will be taken from each group, so we consider all…

Q: Smart phone: Among 245 cell phone owners aged 18-24 surveyed, 106 sald their phone was an Androld…

A: Given: n = 245 x = 106 p = 106/245 = 0.433

Q: Construct a 99% confidence interval for the proportion of those aged 65 and over who have sleep…

A: Given

Q: The maximum weights (in kilograms) for which one repetition of a half-squat can be performed and the…

A: Test the hypothesis

Q: You toss a fair coin 10000 times. What are the odds of obtaining more than 5100 tails,…

A: We have given that P( head ) = 1/2 P( tail ) = 1/2 = p n = 10000

Q: A group of 1,000 people was randomly chosen as a sample for a survey. The ages of the people were…

A: From the given information ws find five number summary and make a Boxplot to solve this problem.

Q: A survey of 2255 randomly selected US adults found that 51% said they know all or most of their…

Q: Question 11 You collect data on N = 15 student weights and find that the average student weight (X)…

Q: State the null hypothesis, Ho, and the alternative hypothesis, Ha, that would be used to test the…

A: According to guideline we solve first three subparts when given multiple sub parts.

Q: Hubert paid a total of $3,250 for 250 shares of stock. He sold the stock for $11.70 per share and…

A: The profit is the amount which a dealer gains in a deal. In that case, the amount spent is smaller…

Question

100%

Grades in an exam have a mean of 60 and a standard deviation of 10. What is the probability that the average grade for n=100 students will be greater than 61 ?( Round to two decimal places)

Expert Solution