Reviewing the sample of offspring of "highly irradiated" male radiologists 27 were female and 40 were male. What proportion of the children in this sample population were male? (answer to 2 decimals).

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A: For country C n=1024,p hat =0.45 For country D n =1078 ,p hat = 0.41

Q: orty studens ha dass at an ney can speak. Complete the table. Foreign Language Gender Chinese…

A: Explanation of the answer is as follows

Q: A study of 1000 adults in Indiana State revealed that 19.9 percent are smokers. The population, the…

A: In Indiana State, a survey of 1000 people found that 19.9% of them smoke. The variables of interest,…

Q: se technology to calculate the P-value P-value = (Round to three decimal places as needed.)

A: Given that  Sample size n1=1120 , n2=1048 Sample proportion p1^=0.47 , p2^=0.46

Q: A survey shows that 3/5 Australian adults are overweight and 1/10 Australian adults are obese. What…

A:

Q: What is the test statistic? Round your answer to three decimal places. Click…

A:

Q: You wish to take a random sample of 45 students from a population of 120 men and 100  women for the…

A:

Q: To compare the time they spent running on the wheel between the three different days (in other…

A: ANOVA To check the difference in mean excercise time of rats in three different conditions.

Q: ecause of practical considerations you ultimately decide to survey 100 people and find that 75 of…

A: here , from 100 people and find that 75 of them would prefer to work at home to some extent. n = 100…

Q: The average (mean) score on an exam was 76.375 in a class consisting of 21 Administration students…

A: From the provided information, The average score on an exam was 76.375 consisting 21 Administration…

Q: figure to the nght, hich shows the percentages of adults from several countries who favor building…

A: The survey included the random sample 1125 adults from country A, 1003 adults from country B, 1019…

Q: A survey of 150 people revealed that 115 people like ketchup on their hot dogs, 85 people like…

A: Concept of General Addition Rule: For any two events A and B the General Addition Rule state that:

Q: At a Karaoke night, Darren arbitrarily assigned each singer a score from 1 to 5 on how “lively” the…

A: The study, in which the subjects are simply measured for a defined attribute, without having been…

Q: Suppose that we identify 155 women 50 to 54 years of age who have both a mother and a sister with a…

A: The hypotheses for the test are given below. Null hypothesis: H0: p = 0.08 Alternative hypothesis:…

Q: What is the population in this study?

A: Given a study about the "childbirth fever".

Q: A researcher wishes to estimate the number of households with two cars. How large a sample is needed…

A:

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A:

Q: µ = 43 and s = 8, what is the z score ? Margret X = 43, z = Katie X = 55, z = Dorinda X = 47, z =…

A: Given that  µ = 43 and s = 8 Formula for Z-score  Z=(X-µ)/s

Q: sample proportion is p= und to three decimal places as needed.)

A: Given Number of sample of teenagers between 13 to 17 year of ages(n)=280

Q: ate the proportion of households with two cars. How large a sample is needed in order to be 95%…

A: Following information is given: Confidence level = 95% Prior estimate of population proportion = 40%…

Q: You want to determine how many loaves of Bread are sold per day at Schat’s Bakery. You stand outside…

A: The sample mean is 421 loaves per day and the population mean is 395 loaves per day.

Q: 59% of all the towns residents own a dog and 69% own a cat. Of the dog owners 43% also own a cat. If…

A: Given 59% of all the towns residents own a dog and 69% own a cat. Of the dog owners 43% also own a…

Q: Suppose a certain virus (sorry!) affects 0.3% of the population. A test used to detect the virus is…

A: 0.3% of 100000 population have virus.  0.3*100000/100= 300  people have virus.  88% have virus and…

Q: A researcher wishes to estimate the number of households with two computers. How large a sample is…

A: given data   CI = 0.90, P ( - Z< P < Z ) = 0.90 therefore z = 1.645 ( =z table ) E = 6% =…

Q: dentify the claim and state Ho and H. The claim is "the proportion of adults in Country C who favor…

A: Given that  Sample sizes for Country C and D n1=1024 , n2= 1078 Level of significance =alpha = 0.09

Q: opic pregnancy is twice as likely to develop when the pregnant woman is a smoker as it is when she…

A: Consider EP represents the event that the women have an ectopic pregnancy. Consider S represents the…

Q: A researcher wishes to estimate the number of households with two computers. How large a sample is…

A: From the provided information, Confidence level = 98% Sample proportion (p̂) = 0.20 Margin of error…

Q: According to the US Census Bureau in 2021, 23% of children under 18 live with only one parent.…

A: To test whether the percentage of children under 18 living with only one parent in Beacon Hills,…

Q: A popular blog reports that 45% of college students log in to Instagram on a daily basis. The Dean…

A: Given that:Sample size, Number of students logging in daily (Number of favorable cases), Level of…

Q: Residents in a city are charged for water usage every three months. The water bill is computed from…

A: INTRODUCTION :   HISTOGRAM: The Histogram is often useful to represent a frequency distribution…

Q: Use the results from a survey of a simple random sample of  1045 adults. Among the  ​1045…

A: Given that  Sample size n =1045 Population proportion p=92%=0.92

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

A: Given that,2% of the components produced by a machine are defective.Sample size, n = 150

Q: Test the claim that the proportion of people that own lawn mowers is more than 59%. If you fail to…

A:

Q: The recidivism rate for convicted sex offenders is 15%. A warden suspects that this percent is…

A: For this study we should use:Z-test. This is because we are dealing with proportions where z-test is…

Q: A car dealership is deciding the proportion of cars they will order with cloth seats. You have been…

A: We have to find sample size required for given margin of error.

Q: The recidivism rate for convicted sex offenders is 14%. A warden suspects that this percent is…

A: Given,n=359x=65P^=Xn=65359=0.181α=0.05H0: P =0.14H1: P>0.14

Q: a newspaper article claims that the average age for people who recieve food stamps is 35 years. You…

A: Given that, A newspaper article claims that the average age for people who receive food stamps is 35…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.