Question 4 [25 marks].and the risk of accidents at a junction. Suppose we observe the following frequencydistribution of the number of accidents in 150 weeks.Transport engineers are interested to study the patternNumber of Accidents12346.7+Observed frequency50302430101(a) Find an estimate (to four decimal places) of the average number of accidents in aweek.(b) Perform a goodness of fit test at the 5% significance level of the null hypothesisthat the observed number of accidents follow a Poisson distribution.Hint: Use the estimate (to four decimal places) you computed in (a) and reportthe expected frequency and observed value of the statistic to four decimal places.(c) What is the p-value of your test in (b)? Does the p-value indicate that there isevidence against the null hypothesis?

The given data is the number of accidents happen in 150 weeks we need to perform goodness-of-fit…

Answered: (a) Find an estimate (to four decimal…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Suppose that a recent poll found that 53%of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 400 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor.
Suppose you are interested in measuring the amount of time on average it takes you to makeyour commute to school. You have estimated that the average time is 38.4 minutes with a standard deviation of 5.362 minutes. Over 12 random days, you measure your commute time. Assuming that your estimated parameters are correct and is normally distributed. Answer the following questions: (a) What is the distribution of the sample mean X¯?(b) What is the mean and standard deviation of the sample mean X¯?(c) What is the probability that the sample mean for sample size 12 will be greater than 36.19 minutes?
The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) below. Assume the population is normally distributed (a) Find the sample mean. x= (Round to two decimal places as needed.) X (b) Find the sample standard deviation. (Round to two decimal places as needed.) (c) Construct a 90% confidence interval for the population mean μ. A 90% confidence interval for the population mean is (Round to two decimal places as needed.) 2.3 3.1 2.9 1.9 0.6 4.0 2.5 1.1 3.7 0.1 2.3 3.3
Suppose that a recent poll found that 46% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 200 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is nothing. (Round to the nearest whole number as needed.)
(d) Why is the margin of error for this confidence interval so small? O A. The standard deviation is very small. OB. The sample size used is very large. OC. The mean is very small. O D. The standard deviation is very large. ہے
The monthly incomes for 12 randomly selected people, each with a bachelor's degree in economics, are shown on the right. Complete parts (a) through (c) below. Assume the population is normally distributed. (a) Find the sample mean. X = (Round to one decimal place as needed.) (b) Find the sample standard deviation. SE (Round to one decimal place as needed.) (c) Construct a 99% confidence interval for the population mean u. C F5 % 5 E B F6 6 & H F7 of n N U F8 L *00 D 8 *** F9 M 09 ( 9 K F10 4450.86 4455.22 4283.26 3946.87 O CO 4596.99 4151.53 4527.11 4023.25 70°F Sunny E F11 *+ P F12 V 4366.62 3727.83 4407.07 4221.28 Submit test 40) 1:25 PM 11/28/2022 PrtSc + 11 Insert
A random sample of patient records from a large medical facility were taken and subjects were classified by smoking status and cholesterol levels. The results are summarized in the table with observed counts next to expected values in parentheses followed by the Chi-square component for each cell in brackets. Cholesterol Level Never Smoked 80 (68.86) [1.80] 49 (48.55) [0.00] 28 (39.59) [3.40] Totals 157 Low Moderate High Smoking Status Former Smoker 63 (63.16) [0.00] 37 (44.53) [1.27] 44 (36.32) [1.63] 144 Current Smoker 57 (67.98) [1.77] 55 (47.93) [104] 43 (39.09) [0.39] 155 Totals 200 141 115 456 Write the appropriate hypotheses if the researchers are interested in whether there is a relationship between smoking status and cholesterol levels.
Suppose that a recent poll found that 41% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 250 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is 103. (Round to the nearest whole number as needed.) The standard deviation of X is 7.8. (Round to the nearest tenth as needed.) (b) Interpret the mean. Choose the correct answer below. O A. For every 103 adults, the mean is the maximum number of them that would be expected to believe that the overall state of moral values is poor. OB. For every 250 adults, the mean is the number of them that would be expected to believe that the overall state of moral values is poor. OC. For every 250 adults, the mean is the range that would be expected to believe that the overall state of moral values is poor. OD. For every 250 adults, the mean is the minimum number…
A random sample of patient records from a large medical facility were taken and subjects were classified by smoking status and cholesterol levels. The results are summarized in the table with observed counts next to expected values in parentheses followed by the Chi-square component for each cell in brackets. Cholesterol Level Never Smoked 80 (68.86) [1.80] 49 (48.55) [0.00] 28 (39.59) [3.40] Totals 157 Low Moderate High Smoking Status Former Smoker 63 (63.16) [0.00] 37 (44.53) [1.27] 44 (36.32) [1.63] 144 Current Smoker 57 (67.98) [1.77] 55 (47.93) [104] 43 (39.09) [0.39] 155 Discuss briefly if the conditions for this test have been met. Totals 200 141 115 456
. Patients at the outpatient surgical center in Braintree, MA have an average recovery time of 14 days with a standard deviation of 3 Assuming these raw scores form a normal distribution What is the probability of getting a raw score between 13 and 15?
Suppose that a recent poll found that 41% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 250 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is. (Round to the nearest whole number as needed.)
Suppose that a recent poll found that 65% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 150 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is (Round to the nearest whole number as needed.)

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS