The data table contains waiting times of customers at a bank, where customers enter a single waiting line that feeds three teller windows. Test the claim that the standard deviation of waiting times is less than 2.3 minutes, which is the standard deviation of waiting times at the same bank when separate waiting lines are used at each teller window. Use a significance level of 0.025. Complete parts (a) through (d) below. E Click on the icon to view the data. O A. Họ: a=2.3 minutes HA a<23 minutes OB. H: a<2.3 minutes HA: a=2.3 minutes OD. H: 0223 minutes OC. Họ: 0=23 minutes HA a2.3 minutes HA: a<2.3 minutes b. Compute the test statistic. (Round to two decimal places as needed.) c. Find the P-value of the test statistic. The P-value of the test statistic isO (Round to three decimal places as needed.) d. Does the use of the single line appear to reduce the variation among waiting times There V sufficient evidence to conclude that the single line reduced the variation among waiting times because Ho is V by the hypothesis test.

The data table contains waiting times of customers at a bank, where customers enter a single waiting line that feeds three teller windows. Test the claim that the standard deviation of waiting times is less than 2.3 minutes, which is the standard deviation of waiting times at the same bank when separate waiting lines are used at each teller window. Use a significance level of 0.025. Complete parts (a) through (d) below. E Click on the icon to view the data. O A. Họ: a=2.3 minutes HA a<23 minutes OB. H: a<2.3 minutes HA: a=2.3 minutes OD. H: 0223 minutes OC. Họ: 0=23 minutes HA a2.3 minutes HA: a<2.3 minutes b. Compute the test statistic. (Round to two decimal places as needed.) c. Find the P-value of the test statistic. The P-value of the test statistic isO (Round to three decimal places as needed.) d. Does the use of the single line appear to reduce the variation among waiting times There V sufficient evidence to conclude that the single line reduced the variation among waiting times because Ho is V by the hypothesis test.

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

Related questions

Q: The average birth weight of domestic cats is about 4 ounces. Assume that the distribution of birth…

A: The provided information is as follows:The average birth weight of a domestic cat is 4 ounces.The…

Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

Q: Identify the data value corresponding to the indicated percentile. The heights of women are normally…

A: According to the provided information,

Q: A nutritionist wants to determine how much time nationally people spend eating and drinking Suppose…

A: According to the given information in this question, we need to answer part c

Q: The average daily points for my fantasy baseball team are {4.1, 5.7, 3.8, 4.7, 4.7, 5.5, 4.1, 2.7,…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: A successful basketball player has a height of 6 feet 8 inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: The heights of 10 year old American children are normally distributed with a mean height of 4 feet…

A: Given that. X~N( μ , ?) μ=52 , ?=4.75 Z-score =( x - μ )/?

Q: The relative frequency histogram represents the length of phone calls on George's cell phone during…

A: A histogram is a visual representation of continuous data.

Q: ctrical customers are often told what the average amount of electricity is used for similar homes in…

A: The mean is μ=1650Standard deviation is σ=320z-value at 86% confidence is Zc=1.18x=?

Q: The heights of a 10 year old American children are normally distributed with a mean height of 4 feet…

A: Given, Mean m = 51 Standard deviation sigma = 4.25

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 96.4 and a standard…

A: Given,Mean, μ = 96.4Standard deviation, σ = 18Using formula,

Q: e. Use Excel's statistical functions, such as "=average", to get the mean, median, range, variance,…

A: Since you have posted a question with multiple sub-parts, we will solve first 3 sub-parts for you.…

Q: Calculate the sample standard deviation for this data set: 88, 73, 91. The formula for the sample…

A: Given: Data set:88,73,91. n=3 Step 1: The sample mean is calculated as x¯=∑xin=88+73+913=84 Thus,…

Q: Draw by hand or in Excel fully labelled curves on a common scale to epresent two sets of scores…

A: a. Mean = 25Standard deviation = 4Mean = 50Standard deviation = 4

Q: A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose…

A: A) option A is the answer. Answer : Since the distribution of time spent eating and drinking each…

Q: In order to be allowed to go on a particular kids ride at the amusement park, children must be at…

A: Let X be the height of 10 year childrens follow normal distribution X~N( μ=53 , ?=4.5))…

Q: the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 70 miles…

Q: The heights of adult women are normally distributed with a mean of 64.5 inches and a standard…

A: The question is about normal distributionGiven :Mean height of adult women ( ) = 64.5…

Q: Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 67…

A: Empirical rule is used in statistics and probability.

Q: The average annual precipitation in Vancouver, British Columbia is 1300 mm. Assuming that the…

A: The value of μ=1300μ+σ=1530, μ+σ=1070μ+2σ=1760, μ+2σ=840μ+3σ=1990, μ+3σ=610 a) Annual…

Q: Suppose that prices of a gallon of milk at various stores in one town have a mean of $3.60 with a…

A: Here is the explanation is as follows; Given that prices of a gallon of milk at various stores in…

Q: standard deviation is s = 30. Determine the test statistic for this test.

Q: None

Q: ufacturer of bolts has a quality-control policy that requires it to destroy any bolts that are more…

A: Answer Mean [μ] =15Standard deviation [σ ] =0.10It is more than 4 standard deviations..

Q: The distribution of the lengths of long-stemmed roses is mound-shaped and symmetric with the mean…

A: The mean is 15 and the standard deviation is 2.

Q: Identify the data value corresponding to the indicated percentile. The amount of sleep an adult gets…

A: The normal distribution:A continuous random variable X is said to follow normal distribution with…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0" and standard…

Question

The data table contains waiting times of customers at a bank, where customers enter a single waiting line that feeds three teller windows. Test the claim that the standard deviation of waiting times is less than 2.3 minutes, which is the standard deviation of waiting times at the same bank when
separate waiting lines are used at each teller window. Use a significance level of 0.025. Complete parts (a) through (d) below.
E Click on the icon to view the data.
O A. Họ: a=2.3 minutes
HA a<23 minutes
OB. H: a<2.3 minutes
HA: a=2.3 minutes
OD. H: 0223 minutes
OC. Họ: 0=23 minutes
HA a2.3 minutes
HA: a<2.3 minutes
b. Compute the test statistic.
(Round to two decimal places as needed.)
c. Find the P-value of the test statistic.
The P-value of the test statistic isO
(Round to three decimal places as needed.)
d. Does the use of the single line appear to reduce the variation among waiting times
There
V sufficient evidence to conclude that the single line reduced the variation among waiting times because Ho is
V by the hypothesis test.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Equality of Variances$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions

Help me please
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 63 miles per hour, with a standard deviation of 4 miles per hour. Estimate the percent of vehicles whose speeds are between 59 miles per hour and 67 miles per hour. (Assume the data set has a bell-shaped distribution.) Approximately % of vehicles travel between 59 miles per hour and 67 miles per hour.
For a certain type of job, it costs a copany an average of $231 to train an employee to perform the task. The standard deviation is $5. Find the minimum percentage of data values that will fall in the range of $219 to $243. Use Chebyshev's theorem.
Please answer asap
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 71 miles per hour, with a standard deviation of 3 miles per hour. Estimate the percent of vehicles whose speeds are between 62 miles per hour and 80 miles per hour. Assume the data set has a bell shaped distribution.
The distribution of the heights of young men is approximately normal with a mean of 70 inches and a standard deviation of 2.5 inches. Fill in the blanks: The heights of the middle 95 percent of men fall between inches and inches. (Give your answers as whole numbers.)
Find Test Statistic, P value, and Z score.