What percentage of Births occurred among women between the ages of 40 and 42?

Q: The state education commission wants to estimate the fraction of tenth grade students that have…

A: Population is the set of all objects of interest. For statistical studies, the complete population…

Q: ence rate of tub

A: Given, Number of individual cases= 17,357  Estimated population= 275,326,000

Q: what is the average number of traffic accidents

A: Discrete series means where frequency  of a variable are given but the variable is without class…

Q: A researcher wants to estimate the prevalence of breast cancer among women who are between 35 and 45…

A:

Q: The table below show the sample of ages of teenagers start smoking. What is the percent cumulative…

A: Given, Ages Frequency 18 10 19 15 20 5 21 6 22 2 23 4 24 9 25 4

Q: What is the approximate percentage of students who scored lower than 44 on the test? What is the…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: What is the approximate percentage of buyers who paid between $1330 and $1470? % What is the…

A: Let X be the random variable from normal distribution with mean (μ) = 1400 and standard deviation…

Q: What is the formula to find weighted mean.

A: Weighted Mean: A mean in which some values are more important than others.

Q: Here are the fuel efficiencies (in mpg) of 8 new cars. 45, 20, 45, 14, 34, 22, 18, 28 What is the…

A: Given information- We have given the data of the fuel efficiencies of 8 new cars (arranged in…

Q: Over the last Ten months, the following numbers of absences have been reported: 38, 12, 4, 12, 9, 33…

A: Given data is,38 , 12 , 4 , 12 , 9 , 33 , 23 , 21 , 12 , 38Sample size(n)=10

Q: Imagine that the pregnancy test accurately indicates pregnancy in 97.5% of the people who have it.…

A: The miss rate will be 2.5%

Q: A Sample of 25 cities have been classified as high or low on their homicide rates and on the number…

A: The formula for chi-square is, χ2=∑fo-fe2fe In the formula fo is the observed frequency, fe is the…

Q: Describe about the difference between population means>

A: Assuming that we are comparing the difference between two population means which are defined as The…

Q: Here are the ages (in years) of 8 professors at a college. 32, 46, 29, 37, 57, 28, 34, 42 What is…

A:

Q: If 2% of the components produced by a machine are defective, what is the average number of defective…

A:

Q: The Bata Shoe Museum states that 16% of women wear shoes that are too small for their feet. A…

A: 16% women wear shoes that are too small for their foot. So, proportion of women wear shoes that are…

Q: What is the proportion of the total incidence of CHD in smokers that is attributable to smoking? Use…

A: Given Information: Total no. of participants=4560No. of Total smokers=2249No. of smokers having…

Q: 4. What is the percentage of the patients who recovered in or after 10 days?

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Q: You flip a fair coin 16 times in the air. What is the relative frequency of this coin landing on…

A: One method for making information clear and easy to understand is to structure it in a frequency…

Q: A survey conducted between January 1, 2001 and December 31, 2001 identified 3,240 cases of Type I…

A: Given:        Size of population = N = 4500,000        number of cases in 2001 =3240…

Q: The mean age of a combined group of men and women is 30 years. If the mean age of the group of men…

A:

Q: Here are the fuel efficiencies (in mpg) of 12 new cars. 52, 32, 18, 14, 48, 22, 36, 55, 12, 20, 14,…

A:

Q: among the 1018 respondents, 428 said that pesticides are "not at all harmful."  What percentage of…

A: Total number of respondents = 1018Total number of respondents said that pesticides are "not at all…

Q: A researcher wants to estimate the prevalence of breast cancer among women who are between 35 and 45…

A: p = 0.0043 margin of error = 0.001 z-critical value = 1.96

Q: What percentage of scores are between scores 68 and 82?

A:

Q: 7) A researcher at a major hospital wishes to estimate the proportion of the adult population of the…

A: Given that, Critical value: Using the z-table, the critical value at 99% confidence level is

Q: Fetal autopsies 3 Autopsies: Pediatric pts 1 Autopsies: Emergency room pts 12 Autopsies: cancer pts…

A: Introduction: Fetal autopsy rate is the rate at which fetal deaths result in autopsies, and the…

Q: The workers at drug factory took a random sample of 800 drug tablets and found that 40 of them were…

A:

Q: An estimated 333 out of every 252525 men are left-handed. What percent of men are left-handed?

A:

Q: The mean age of a combined group of men and women is 30 years. If the mean age of the group of men…

A:

Q: Imagine that 200 people who do not have TB participated in the TB test. The test indicated 85.5% of…

A: False positive shows the there person does not have disease but they detected to have disease in the…

Q: . what percentage of females will be forced to look for new pa

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Q: a What percent of the recruits are between ages 23 and 29 What is the probablity that a recruit is…

A: here from given information mean = 23  standard deviation = 3 here use standard normal distribution…

Q: In a survey of 3121 people, 412 are under-vaccinated. What is the proportion of under-vaccinated…

A: Given data, Total no of people n=3121 No of people under vaccinated is x=412 What is the proportion…

Q: What Percentage of deaths occurred after 2006?

A:

Q: A pharmaceutical researcher wants to determine the proportion of people who believes that branded…

A: For the given data n = ?

Q: A pharmaceutical researcher wants to determine the proportion of people who believes that branded…

A: Given that  Margin of error =E =1%=0.01 95% confidence.

Q: Here are the fuel efficiencies (in mpg) of 15 new cars. 49, 35, 17, 21, 27, 23, 45, 50, 39, 51, 41,…

A:

Q: If 10 out of 30 students got 22.5, 15 got 40 and 5 got 80 in an exam, which is the weighted average…

A: Given information: Total number of students n=30 The scores achieved by the respective number of…

Q: The median age at first marriage of US Woman (26.1 years) is what percentage less than the median…

A: We have been given the median age of woman and men and we have to find median age of woman is what…

Q: Is the number of runs scored by a baseball team during a season quantitative and discrete?

A: Discrete random variable: A discrete random variable takes the countable number of real values. This…

Q: 11) What is the percentage of players whose height is less than 70 inches? pos) 12) What is the…

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Q: Suppose that the time spent by children in front of the television set per year has the distribution…

A: We have given that X ~ N (µ, σ )= N(1500 , 250) Mean(µ) = 1500Standard deviations (σ) = 250

Q: What is the fraction of deaths that happened before 2012?

A:

Q: Which orchard has the highest rate of apples per tree?

A: Here it is given that the three apple orchards and each orchard has a different number of trees and…

Q: What percentage change in the total and Hispanic populations occurred in each state between 2000 and…

A: The U.S. Hispanic  populations reached a record 60.6 million in 2019, up 930,000 over the previous…

Q: A diastolic blood pressure greater than 90 is classified as hypertension (high blood pressure). What…

A:

Q: A coin is flipped 70 times and lands on tails 28 times. What is the relative frequency of the coin…

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Q: Suppose we changed the definition to the average number of dots after forty rolls. Would this…

A: