A Scientist wished to compare effect of three botanical extracts as anti diabetes drug. He felt effectiveness of botanicals may vary in different age groups of patients so he divided them in

Q: What is the scale factor of the enlargement

A: From given figure, we can find length of AC=4 units and length of A'C'=12 units. Now , scale factor…

Q: What proportion of students studied more than 4 hours?

A: Given that Total number of students = 240 Number of students who studied more than 4 hours = 50

Q: Using a random sample of 3800 TV households, a media research company found that 50.3% watched the…

A:

Q: Whose paint has a greater ratio of red to yellow?

A: comparing ratios red to yellow

Q: Among the people in the age class "18 - 24", what is the percentage of people who prefer "Soft…

A: Given that Number of people who prefer soft drinks and in the age class 18 - 24 = 90 Number of…

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

A:

Q: Which types of car were driven by more than 623 respondents in the survey?

A: Here use proportion from given pie chart And calculate no of people drive that type of car

Q: An Ectopic Pregnancy is twice as likely to develop when the pregnant women is a smoker as it is when…

A: The aim is to get the percentage of women having ectopic pregnancy are smoker.Let A be the event…

Q: The CVS Pharmacy located on US 17 in Murrells Inlet has been one of the busiest pharmaceutical…

A: Solution: 1. State the hypotheses. Null hypothesis: H0:µd≤0 Alternative hypothesis: H1:µd>0 The…

Q: If a study determines the difference in average salary for sub populations of people with blue eyes…

A: Given, As the study determines that the difference in average salary for sub-populations of people…

Q: What is Multiple Comparisons?

A: In statistics and probability theory, Multiple Comparisons (also known as multiplicity or multiple…

Q: In a sample of 45 men, 27 said that they had less leisure time today than they had 10 years ago. In…

A:

Q: What is the scale factor

A: Here we have to find the Scale factor,

Q: A group of preschoolers has 15 boys and 12 girls. What is the ratio of girls to boys as a…

A: The group has, 15 boys and 12 girls. So, the ratio of girls to boys is, 12 : 15 = 4 : 5

Q: A survey of 800800 nurses yielded the following information: 430430 were health club members, 575575…

A: Given :  A survey of 800800 nurses yielded the following information: 430430 were health club…

Q: In a recent study, 46% of people enjoy country music.  If 200 people are surveyed about their…

A: Given : Proportion (prop.) of people enjoy country music p = 46% = 0.46 Sample size of people n =…

Q: Luis wanted to test the effects of a new fertilizer on his house plants. He randomly assigned the…

A: The groups are assigned randomly. It means that the groups are independent.The independent sample…

Q: Explain why we use this formula E=row total * column total/sample size

A: Given that::: E=row total * column total/sample size

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: What is the advantage of using piecewise interpolation than using Lagrange interpolation?

A: Piecewise linear interpolation is second-order accurate. The Lagrange interpolation formula is a…

Q: A recent study of young executives showed that 30 percent run, 20 percent bike and 12 percent do…

A: Note: Hi there! Thank you for posting the questions. As there are several independent questions,…

Q: A company took a survey about its new product. 7,200 people liked the new product and 800 people did…

A:

Q: In a comparison taste test of two juice drink 780 people preferred Cranberry Blast.Only 220 people…

A: In a comparison taste test of two juice drink 780 people preferred Cranberry Blast.Only 220 people…

Q: A researcher reports an F-ratio with df = 3, 36 from an independent-measures research study. How…

A: A researcher reports an F-ratio with df = 3, 36 from an independent-measures research study. It is…

Q: Travis took the ACT (μ=19.50,σ=7) and recieved a percentile of 67. What was his z score? What was…

A: you had not provided distribution of sat score so we can not find answer of c.

Q: A random sample of 302 Californians found that 129 support Measure A. Build a 88% Cl for the…

A: Given that  Random sample size (n) = 302 Supported measure A = 129   Sample proportion (p) =…

Q: What similarities do the Caribbean and Central America share with other regions in the Western…

A: We have to write about similarities

Q: Two fuel additives are tested to determine their effect on miles per gallon for passenger cars. Test…

A: State the null and alternative hypothesis: The investigator is specially interested to test whether…

Q: A researcher is running a study to determine the proportion of men that wear neckties to work. To…

A: Since, we answer only first three sub-parts of a question, we will answer the first three. Please re…

Q: what percentage of bus drivers had 3 or more traffics acccidents

A: From the provided information, Sample size (n) = 700 Total frequency of 3 or more traffic accidents…

Q: According to the Law of Large Numbers what effect will increasing the sample size have on the sample…

A: It is given that the sample size increases.

Q: An article in the Archives of Internal Medicine reported that in a sample of 224 men, 73 had…

A: Here 224 men and 232 women are selected randomly. 73 of the men had elevated cholesterol levels,…

Q: s the significant difference?

A: Hypothesis:  Null Hypothesis: The factor affecting the career choice of the students is their…

Q: In a recent survey of 180 people who drink coffee or tea, it was found that 137 drink coffee and 74…

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: If you double the sample size in a poll, what effect does that have on the margin of error? By what…

A: The margin of error can be calculated in two ways, depending on whether you have parameters from a…

Q: What is the column proportion, D, for students who find SAS difficult to learn and who are somewhat…

A: The number of students who find SAS difficult to learn and who are somewhat proficient is 15.

Q: What percentage of the widow Students are female

A:

Q: What is the percentage of households with an intensified waste management system (dark green)?

A: The objective is to find the percentage of households with an intensified waste management system…

Q: State the generic error for an interpolating formula?

A:

Q: Assemble fuel consumption data for 10 automobiles of your choice (in litres/100km). Show details of…

A: I have used a random function to get the values of consumption data for 10 automobiles of choice (in…

Q: What percentage of the widow students are  female

A: Total widowed students=2+3=5Total female students who are widowed=3

Q: A small-town mechanic says that 8% his customers come in for an oil change. When  1000 samples were…

A: It is given that a small-town mechanic says that 8% of his customers come in for an oil change.

Q: If a person’s z-score equalas 2.08, what is their percentile? Thank you.

A: Our aim is to find the percentile.

Q: Why a favorite technique for controlling individual differences is referred to as repeated measures?

A: Repeated measures is defined as the measure in which the measurement of a particular subject is…

Q: A principal of a college wants to estimate the proportion of smokers among his students. What

A: Given : Margin of error, E = 10% = 0.10 Sample proportion = 0.30

Q: What is the Scale factor

A: The old coordinates B=(0,2), C=(3,0) So the length of BC=(0-3)2+(2-0)2=9+4=13 The new coordinates…

Q: A nursing school professor is interested in determining how her college students compare to the…

A: Let X denote the exam score, then assuming that X is normally distributed with mean, µ = 100 and a…

Q: What is the percentage of players whose age is less than 32?

A: here given  mean = 33 year  standard deviation  =  2 year x= retirement age

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.