According to an article in Newsweek, the natural ratio of girls to boys is 100:108. In Turkey, the birth ratio is 100: 118 (45.8% girls). Suppose you do not believe the reported figures of the percent of girls born in Turkey. You conduct a study. In this study, you count the number of girls and boys born in 140 randomly chosen recent births. There are 50 girls and 90 boys born of the 140. Based on your study, do you believe that the percent of girls born in Turkey is 45.8?

Q: If three out of every eight trick-or-treaters that came to your house last Halloween were dressed as…

A: Simplify to get the answer.

Q: A Pew Research study estimates that 803 million people live in poverty today, after the 2020 global…

A: It is given that 803,000,000 people live in poverty today, out of 7,754,000,000 people worldwide.

Q: A sample selected from a population gave a sample proportion equal to 0.60.

A:

Q: The province of Pangasinan has a population of 3,163,190. Calculate the sample size using Yamane's…

A:

Q: 13. If 27 out of 30 people passed a driving test, what percent failed?

A: Given Total people = 30 Passed people= 27 So ,failed people= 30-27 = 3

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

A: Given Information: Country A: Sample size n1=1004 Sample proportion p^1=0.53 Country B: Sample size…

Q: ching basketball to football?

A: We have to use % formula to solve the problem

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: In a shipment of 500 light bulbs, 25 of them were broken. What percentage of the light bulbs were…

A: Given ,  In a shipment of 500 light bulbs , 25 of them were broken . We have to find the  percentage…

Q: What percentage of the sample were female drivers?

A: It is given that Total = 5+7+11+9 = 32 Number of females = 7+9 = 16

Q: What is the estimate of the common population proportion?

A: To find: The estimate of common population proportion

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: what proportion of people in relationships are dissatisfied?

A: Let , X→N(μ=60 , σ=8) Since , an individuals with a score 50 or less is considered dissatisfied. Our…

Q: If a researcher measures two individuals on a ratio scale, then it is impossible to determine how…

A: Ratio scale is a form of quantitative variable measurement scale. Ratio scale makes it possible for…

Q: In a village actually invaded by anthrax, 65% of the gouts were attacked and 90% have been…

A:

Q: If a coin is flipped 150 times and the number of Hs is 25. Compute the proportion of Hs. Round to…

A: We have given that,  Favorable cases (X) = 25 and sample size (n) = 150 Then,  We will find the…

Q: Suppose that in a group of 800 women, the percentage who work is the same as in the sample here, how…

A: men women total work 15 23 80 not work 23 28 51 total 38 93 131

Q: Is there any reason to doubt the expected ration of 9:3:3:1 (the counts above are given in order)?

A: 4) Let ppr is defined as the proportion of purple round, ppw is defined as the proportion of purple…

Q: A research report from an independent-measures study states that there are significant difference…

A: From the provided information, The degree of freedom for treatment (k – 1) = 3 A) The required…

Q: Say that there are five populations, and we need to test for difference of population means.  If we…

A: Say that there are five populations, and we need to test for difference of population means. We test…

Q: If in a village actually involved by anthrax, 70 per cent of the goats are attacked and pei cent…

A:

Q: A management survey for a company surveyed 235 employees. 105 of the employees surveyed were…

A: Given, Number of employees= 235 Female employees= 105 Male employee % =?

Q: A survey of Hoosiers found that 57% are Pacers fans, 44% are Colts fans, and 35% are Pacers fans but…

A: Let P= Pacer fans  C= Colt fans So, P(P)= 57% = 0.57  P(C)=44%=0.44 So, 57% - 35%=22%= 0.22 are…

Q: There are 1,000 students in a college. Out of 20,000 in the whole university, in a study 200 were…

A:

Q: If the proportion of Heads is .45 out of 200 flips, what is the p-value?

A: The proportion of Heads is .45 out of 200 flips.

Q: A medical researcher wants to do a study on the proportion of knee replacement surgeries that result…

A:

Q: The Arizona Department of Transportation wishes to survey state residents to determine what…

A: Solution-: Given: M.E.=0.03,α=0.01, We take, p^=0.5 and  q^=0.5  We find how many residents do they…

Q: c)   If the scientists want to estimate the proportion of deer that carry Lyme disease ticks to…

A: We have given that,  Margin of error (E) = 0.02 and confidence level = 90% Then,  We will find the…

Q: What percentage of people are men who like movies?

A:

Q: A state legislator wishes to survey residents of her district to see what proportion of the…

A: Answer:-  Given, Margin of error=7%=0.07 Confidence level=0.90 Let P=0.5 ( as we don't have sample…

Q: In a sample of size 20, the sample mean is 60. In this case, the sum of all observation in the…

A:

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: We would like to know: “What percentage of college students read the college newspaper every day?”…

A: We have to find given probabiity.

Q: A pollster wishes to estimate the true proportion of US voters who oppose capital punishment. How…

A: Given information Error = 3.5% = 0.035 Confidence level = 0.90

Q: our population? W

A: A population is a total group included in the survey. A sample is a specific group from which data…

Q: According to Newsweek, the natural ratio of girls to boys’ birth rate is 100:105 or 48.8%. In China,…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: What proportion of the general population has an IQ of 70 or less?

A: It is an important part of statistics. It is widely used.

Q: A research report from an independent-measures study states that there are significant differences…

A: The degrees of freedoms are 2 and 36.

Q: What percentage of people eat fruits and vegetables and abstain from smoking, but do not partake in…

A: Given, The venn diagram for fruit and vegetable intake, physical activity and smoking abstinence. We…

Q: a survey showing the popularity of the current governor gives an approval rating between 42% and…

A:

Q: when you have means from two different samples, it is best to conduct a what test?

A: When there is mean from two different samples, two types of test can be conduced:

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: (a) What proportion of babies born full term are low-birth-weight babies? (b) What proportion of…

A: From the given information, let X be the full term baby birth weights. Here, X follows normally…

Q: If the proportion of Hs is .45 out of 200 flips, what is the p-value?

A: Solution-: Given : We find p-value=?

Q: What percent of Males are Right Handed? (Round to the nearest Whole Percent) Gender compared to…

A: In this question we need to find a % of males are right handed . While calculating percentage of…

Q: Is the following interpretation of the odds ratio true or false? The odds of having a stoke are 1.93…

A: Given,   Stroke   Smokers Yes No Yes 171 3264 No 117 4320 Now the odds ratio is obtained…

Q: If the proportion of Hs is .45 out of 50 flips, what is the p-value? Round to three places.

A: We have given that Sample proportion =0.45 Sample size (n)=50 flips  Population proportion p=0.5…

Q: In a group of 50 children, 11 cannot swim. What percentage can swim?

A: Givenno.of children in a group=50no.of children cannot swim=11

Q: If five out of every eight trick-or-treaters that came to your house last Halloween were dressed as…

A: GIVEN: 5 out of every 8 trick or treaters that came to your house were dressed as cowboys.

Q: A city has 100200 women aged 15-49 and 40896 children under age 5. The Child woman ratio is O a. 480…

A: Given, No of women aged 15-49 n = 100200 No of children under age 5 x = 40896

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.