The U.S. Center for Disease Control reports that the mean life expectancy was 47.6 years for whites bom in 1900 and 33.0 years for nonwhites. Suppose that you randomly survey death records for people born in 1900 in a certain county. Of the 124 whites, the mean life span was 45.3 years with a standard deviation of 12.7 years. Of the 82 nonwhites, the mean life span was 34.1 years with a standard deviation of 15.6 years. Conduct a hypothesis test at the 0.05 level of significance to see if the mean life spans in the county were the same for whites and nonwhites. a) The null and alternative hypothesis would be: O Ho: pw = PN H1: pw PN H1:Hw 0.05

The U.S. Center for Disease Control reports that the mean life expectancy was 47.6 years for whites bom in 1900 and 33.0 years for nonwhites. Suppose that you randomly survey death records for people born in 1900 in a certain county. Of the 124 whites, the mean life span was 45.3 years with a standard deviation of 12.7 years. Of the 82 nonwhites, the mean life span was 34.1 years with a standard deviation of 15.6 years. Conduct a hypothesis test at the 0.05 level of significance to see if the mean life spans in the county were the same for whites and nonwhites. a) The null and alternative hypothesis would be: O Ho: pw = PN H1: pw PN H1:Hw 0.05

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: One prominent physician claims that 80% of those with lung cancer are chain smokers. Compute the…

A: Here, we can consider that it is Binomial distribution because 80% of people has lung cancer and…

Q: What

A: Explanation and solutions is given below....

Q: CNNBC recently reported that the mean annual cost of auto insurance is $962. Assume the standard…

A: Given information: The mean annual cost of auto insurance is $962. The standard deviation is $190.…

Q: The weight of trucks traveling on a particular section of I-475 has a population mean of 15.8 tons…

Q: Tiger Woods hits an average driver 287.2 yards with a standard deviation of 24.6 yards. What is the…

A: The probability value is calculate by means of standard normal variate with the random variable,…

Q: The We Go Farther Tire Company advertises a tire that lasts for 80,000 miles. The mileage for the…

Q: population has a mean of 350 and a standard deviation of 25, determine the probability that a random…

A: GIVEN DATA, μ=350σ=25n=40p(335<x¯<375)=?

Q: An advertising agency has stated that 20% of all television viewers watch a particular program. How…

A: From the provided information, An advertising agency has stated that 20% of all television viewers…

Q: The sample standard deviation is one measure that describes the value in the sample that the data…

A: A single number that seeks to represent a set of data by identifying the center position within that…

Q: The standard deviation may not be greater than the mean. O True O False

A: False: standard deviations may be greater than mean example: random variable x follow standard…

Q: If the mean of a list of numbers is 16.7 and the standard deviation is 0,

A: Mean is a measure of central tendency. It is one of the most important measures to find out around…

Q: Suppose that we know that 33.8% of the people born in the United States between 1936 and 1951 have…

A: The given situation follows binomial distribution. The proportion of people born in United States…

Q: What is the Z value for a value of X = 60?

Q: imagine you’re hired by a beef company called “American Beef Makers” as a Data Analyst and you’re…

A: Please note that as per our guidelines if multiple sub-parts are there in a question we can answer…

Q: The average score of all golfers for a particular course has a mean of 76 and a standard deviation…

A: We have given information with the usual notation, Let X denote the score of golfers for a…

Q: the household rather than the male in the household. A coupon book was sent at random to either the…

A: Solution: Given information: n= 50 Sample size xd= 1.5 Diffrence of sample mean sd=4.75 Difference…

Q: A statistics professor announces that 15% of the grades he gives are As. The results of the final…

A: It is given that the mean and standard deviation are 83 and 6, respectively.

Q: A population has a mean of u = 30. If 3 points are added to each score, what is the mean for the new…

A: Given : Mean(μ)=30 and N=3

Q: A study conducted by the Center for Population Economics at the University of Chicago studied the…

Q: Last year the revenue for utility companies had a mean of $60 million with a standard deviation of…

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: have a mean GPA of 2.57 with a standard deviation of 0.71. how many of the 850 new students have a…

A: Given that. X~N( μ , ?) μ=2.57 , ?=0.71 Z-score =( x - μ )/?

Q: According to the Nielsen Company, the mean number of TV sets in a U.S. household in 2013 was 2.24…

A: Mean = 2.24 Standard deviation = 1.3 Sample size = 95

Q: The governor of Florida would like to estimate the mean age of all Florida residents. To do so, he…

A: We have given that he randomly selects 500 Florida residents and determines their mean age to be…

Q: ketch a bell curve for the ACT composite data with markings on the horizontal axis for ±1 standard…

A: here given , For the ACT, the mean composite score was 21.0 with a standard deviation of 5.2.

Q: For a random sample of 70 overweight men, the mean of the number of pounds that they were…

A: given data n = 70 x¯ = 28 poundsσ = 3.8 poundsbest point estimate for population mean = ?

Q: 500 freshmen at Arundel University took part in a math comprehension test. The scores were normally…

A: From the provided information, Mean (µ) = 75 Standard deviation (σ) = 7 Let X be a random variable…

Q: The average score of all golfers for a particular course has a mean of 64 and a standard deviation…

Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

100%

The U.S. Center for Disease Control reports that the mean life expectancy was 47.6 years for whites born in
1900 and 33.0 years for nonwhites. Suppose that you randomly survey death records for people born in 1900
in a certain county. Of the 124 whites, the mean life span was 45.3 years with a standard deviation of 12.7
years. Of the 82 nonwhites, the mean life span was 34.1 years with a standard deviation of 15.6 years.
Conduct a hypothesis test at the 0.05 level of significance to see if the mean life spans in the county were
the same for whites and nonwhites.
a) The null and alternative hypothesis would be:
O Ho: pw = PN
H: pw > PN
H:µw <HN
Nil = Mrl:0HO
O Ho: µw = HN
H1: µw HN
O Ho: pw = PN
H:pw PN
O Ho: Hw LN
NI < Mt:H
O Ho: pw PN
H1:Pw <PN
b) Determine the test statistic. Round to two decimals.
t =
c) Find the p-value and compare it to 0.05. Select which is true of the p-value:
p =
Op-value < 0.05
Op-value = 0.05
Op-value > 0.05
d) Make a decision.
O Fail to reject the null hypothesis
O Reject the null hypothesis
e) Write the conclusion.
O There is not sufficient evidence to support the claim that whites and nonwhites have different life
spans.
O There is sufficient evidence to support the claim that whites and nonwhites have different life spans.

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

Introduction

VIEW

Calculation

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Point Estimation, Limit Theorems, Approximations, and Bounds$

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

A researcher collected data on the palate length of 50 individual shrews of the same species.. She found the mean palate length was much higher than the median palate length. The reason for this finding might be... There was no correction for the correct degrees of freedom in calculating the mean. Several shrews had much longer palates (i.e., outliers are large) than others. The researcher made some measurement errors. All shrews had longer palates than the mean for the species. Several shrews had much shorter palates (i.e., outliers are small) than others.
Suppose a claim is made that the mean age of members of a golf club is 52 years. The population standard deviation is 6 years. Evaluate this claim if a random sample of 50 members has a mean age of 56 years. Is there a way to get answer on excel?
Suppose that heights of women in Utah are normally distributed with a mean of 74 inches and a standard deviation of 3.4 inches. Find the probability that a randomly chosen woman is between 62 and 68 inches tall. Find the probability that a randomly chosen woman is taller than 80 inches tall. Find the 95th percentile. inches
For a random sample of 10 men, the mean head circumference is x-bar= 57.3 cm and the sample standard deviation is s = 2 cm. What is the standard error of the mean?
In a population of ages where the mean age is 45 and the standard deviation is 5.25, what are the ages of the youngest 7% and the oldest 12%?
If the mean I.Q. is 100 and the standard deviation of I.Q. scores is 15, then an I.Q. of 130 will have a z score(or standard score)
Suppose that we know that 33.8% of the people born in the United States between 1936 and 1951 have BLUE eyes. Three randomly selected Americans are selected and examined for eye color. If you let success correspond to an American having BLUE eyes, calculate the following. Calculate the standard deviation.
The average person uses 130 gallons of water daily. If the standard deviation is 35 gallons , find the probability that the mean of a randomly selected sample of 25 people will be between 110 and 135 gallons.Assume the variable is normally distrubuted
If the range of a data set is 64, find the approximate value of the standard deviation, using the range rule of thumb.
If the gondola is filled with 25 randomly selected skiers, what is the probability that their mean weight exceeds 140 lbs. The mean is 180 lbs and standard deviation is 44 lbs
A maths class has 100 members. If there is a 15% absentee rate per class meeting , find the standard deviation of the number of students who will be absent from each class?
A grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard deviation 53 grams. If this is true, then 99.7% of cantaloupes will have weights between how many grams?