For Questions 4-8: Heights (or lengths) of adult animals tend to have distributions that are well described by normal distributions. The distribution of heights of 25-34 year old females (U.S. Bureau of the Census, 1992) can be approximate by N(63.5",2.5").

Q: How do I calculate to get this std dev answer?

A: Given Information: Proportion p=0.40 Sample size n=50 Based on the concept of Central limit theorem,…

Q: The 95th percentile of 6-year-old boys' heights in the United States is 48.8 inches tall.  Explain…

A: Given: The 95th percentile of 6-year-old boys' heights in the United States is 48.8 inches tall.

Q: Why is it ideal that you report underlying frequencies when you are reporting percentages?

A: A frequency is the number of participants or cases; its symbol is the weird F. The symbol of the…

Q: determine the effectiveness of their recent advertising campaign. Researchers at the agency surveyed…

A: The scenario is that the marketing agency wants to determine the effectiveness of their recent…

Q: What are 2 situations when you will use mode as a measure for central tendency.

A: Mode mode is the value which occurs most frequentlyn in the data set of observation and around which…

Q: What scale of measurement is being used when a teacher measures the number of correct answers on a…

A:

Q: how do you calculate the P-value without excel

A: From the given solution, we get z = -0.957    = -0.96       ( round upto 2 decimal places )…

Q: What is the z-value and area if score is 70 ?

A: The score is 70

Q: A survey reported that 76% of registered voters in California approved of allowing two people of the…

A: given data   event   A : age 18 to 39 years             B : approved of gay marriage   P(B) = 0.76…

Q: You collect data on number of alcoholic drinks consumed by community college students. After…

A: From the provided information, The z score for the sample mean is +0.45.

Q: 6. Assume that there are only three possible levels of education: "low", "middle" and "high". Among…

A: Note: Hey, since there are multiple questions posted, as per guidelines we will answer first…

Q: Supposed that you were asked to examine the relationship between the height of children and their…

A: The test statistic is given as-  t=estimate/standard error For slope, t=0.73/0.10=7.3 For intercept,…

Q: What are the degrees of freedom and how do you calculate df?

A: Degrees of freedom (df) is a mathematical and a statistical concept.

Q: Explain about Scheffe’s test.

A:

Q: Why does The concept of degrees of freedom introduced?

A: First we define the degrees of freedom .  Degrees of freedom :   It refers to the number of values…

Q: It is a R question. Using your personal random sample of 1,000 observations, find: the average age…

A: #Generating 1000 random sample(considered as age)random<- sample(1:100, 1000, replace =…

Q: What is the p-value only?

A: It is given that  In the original solution  The value of the test statistic is z = 3.92. The given…

Q: You are testing the claim that the proportion of men who own cats is larger than the proportion of…

A: Givenclaim is proportion of men who own cats is larger than the proportion of women who own…

Q: Help me figure out what is a p-value?

A: In this case, we need to define the p-value.

Q: What percent of scores are below a T score of 56?

A: Given, T score is 56. Now,

Q: Suppose an estimator for a window supplier made a mistake in measuring by inputting the width of a…

A: Is cost of window is p dollar/inch2 And lengh of window is l Then total lose =lp dollar

Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

A:

Q: whats negative skew?

A:

Q: What are the degrees of freedom and how do you calculate df?

A: Degrees of freedom: If certain restrictions are imposed on all the values of sample data then the…

Q: A sample of 425 voters aged 18 – 25 were asked whether they thought Social Security benefits should…

A: Given information- Significance level, α = 0.05 Let, p1 = proportion of voters aged 18 – 25 were…

Q: the average (mean) score on an exam was 76.52 in a class consisting of 14 supply chain students and…

A: Answer:- Given, A class consisting of 14 supply chain students and 11 HR students.  That is, Total…

Q: What is p value ?

A: The​ P-value is the probability of observing difference in the sample statistic this high or higher…

Q: Describe how to find approximate p-Values.

A:

Q: What is the difference between the average resistance to happiness at age 20 and at age 70?

A: Given :-  R = 4.6 - 0.02x put x = 20. ⇒R=4.6 - 0.02 × 20⇒R=4.6 - 0.4⇒R=4.2 Now, put x = 70 ⇒R=4.6 -…

Q: On a test, John scored at the 50th percentile and Jim scored at the 25th percentile; therefore,…

A: A percentile indicates a score's position in relation to those other values from the same dataset.…

Q: You are testing the claim that the proportion of men who own cats is larger than the proportion of…

A: Given,n1=190  ,  p^1=0.20n2=90  ,  p^2=0.45

Q: 2. Explain the steps of finding the IQR.

A: 2) The steps to finding the value of IQR is, Step 1: First arrange the data in ascending order Step…

Q: What are the Ordinal Measures?

A: Ordinal  scale is the 2nd level of measurement that reports the ranking and ordering of the data…

Q: one percent of grades are greater than what z-score?

A:

Q: What’s the formula to turn a Z score to a T score?

A: The  score is the standardized score obtained by using population data or large samples .The  score…

Q: 923 is what percentage of 1816 ? work the problem

A: This question can be solved using the concept of percentage.

Q: You want to estimate the percentage of statistics students who get grades of C or better. How many…

A: Obtain the sample size. The formula of sample size is, Obtain the area of probability in the right…

Q: What is the PMT?

A: What is the PMT?

Q: What was the median commute time?

A: Here we want to know What was the median commute time.

Q: You want to do a simulation where 10% are left handed, 89% are right handed, and 1% are…

A: It is given that one want to do a simulation where 10% are left-handed, 89% are right-handed, and 1%…