According to Central Limit Theorem, the sampling distribution of the sample mean is approximately normal if O the standard error of the sampling distribution is large. O the mean of the sampling distribution is large O the sample size is large.

Q: Heart rates are determined before and 30 minutes after a Kettleball workout. It can be assumed that…

A:

Q: Listed below are speeds​ (mi/h) measured from traffic on a busy highway. This simple random sample…

A: The data shows the speeds​ (mi/h) from traffic on a busy highway.

Q: For two events, A and B, P[A] is; P[B] is and P[AB] is. Determine the values of: P[AB]; P[AUB];…

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Q: Do the poor spend more time in the shower than the rich? The results of a survey asking poor and…

A: The data shows the number of minutes spend in the shower for poor and rich people.

Q: Consider the following population model that satisfies the CNLRM assumptions: Y; = β2X; + ui in…

A:

Q: An experiment analyzes imperfection rates for two processes used to fabricate silicon wafers for…

A: As asked by you, I have answered question d.

Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…

A: given data  with drug treatment n = 24 x¯ = 80.4s = 23.990% ci for mean

Q: test the claim that student-centered model results in a higher pass rate than the traditional model?

A: Given, Assume, student centered model; n1 = 567 x1 = 335 Assume, students traditional model; n2 =…

Q: A survey was conducted that asked 1016 people how many books they had read in the past year. Results…

A: Given x-bar=13.7 S=16.2 n=1016

Q: Not all visitors to a certain company's website are customers or potential customers. In fact, the…

A: a) Suppose a random variable X, defines the number of visitors, who actually are looking for the…

Q: If X is Uniformly distributed in ДЛ 2 .Find the p.d.f of Y=tan X.

A:

Q: Based on a smartphone​ survey, assume that 57​% of adults with smartphones use them in theaters. In…

A: Given data 57% of adults with smart phones use them in theatres n=224

Q: Problem: Do colors affect mood? You are particularly interested to know which color  gives people a…

A: Solution: Given information: k= 5 Groups or treatment

Q: Stem-and-Leaf Display N = * Leaf Unit = 0.1 9 0 002334666 20 1 01123356777 (**) 2 00122223346799 ***…

A:

Q: The average height of students in a state from an SRS of 17 students gave a standard deviation of…

A: given data   sample size(n) = 17 sample standard deviation(s)  = 2.9construct 95 % ci for σ.

Q: Ann, who turns eighty years old this year, has just learned about blood pressure problems in the…

A: a) Suppose a random variable X defines the systolic blood pressure measurements of a woman over…

Q: Question 4: Assume that the helium porosity (in percentage) of coal samples taken from any…

A: Given Standard deviation=0.75

Q: What is the probability of getting a sum 9 from two throws of a dice?

A: From the provided information, Two dice are thrown. Total outcomes = 6 × 6 = 36

Q: An experimenter expects an effect to come out in a certain direction. Is this sufficient basis for…

A: Given that An experimenter expects an effect to come out in a certain direction. Is this sufficient…

Q: The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard…

A: Given Mean=100 Standard deviations=15

Q: An experiment with three outcomes has been repeated 50 times, and it was learned that E1 occurred 20…

A: Probability of any event A is given by,  P(A)= n(A)/n  Where n(A) is the number of times that…

Q: A local company wants to evaluate their quality of service by surveying their customers. Their budge…

A: given data  n = 250 95% ci for mean  σ = 13E = ?

Q: The Department of Health collected data on the amount of sodium (in mg) in hotdogs advertised…

A: Given data The departement of health collected data on amount of sodium in hot dogs advertised…

Q: The probability function of a continuous random variable, X, is given by the equation: fx(x) =…

A:

Q: 7.25 Fuel economy. Although the Environmental Protection Agency (EPA) establishes the tests to…

A: Given: n = 16 Confidence level = 95% Formula Used: Confidence Interval = X ± t*sn

Q: In a sample of 800 U.S.​ adults, 195 think that most celebrities are good role models. Two U.S.…

A: There is total 800 U.S. adults.

Q: company decided to test the hypothesis that the average time a company’s employees are spending to…

A: Suppose μ is the population average time a company’s employees are spending to check their private…

Q: 18. In 1974, Loftus and Palmer conducted a classic study demonstrating how the language used to ask…

A:

Q: Many universities use a student's ACT score to help with admission decisions as well as placement…

A: Correlation coefficient r=∑xi-x(yi-y)∑xi-x2.∑yi-y2

Q: Refer to the data set of 20 randomly selected presidents given below. Treat the data as a sample and…

A: From the information out of 20 randomly selected presidents 8 are  taller than their opponents.

Q: Consider the following hypothesis test. H0: p ≥ 0.75 Ha: p < 0.75 A sample of 290 items was…

A: GivenNull and alternative hypothesis isH0:p≥0.75Ha:p&lt;0.75sample size(n)=290significance…

Q: For a normal distribution, assume the 'sample' standard deviation is 5. What is the maximal margin…

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Q: pulse rates among healthy adults are normally distributed mean 79beats/min standard dev 8beats/min…

A: R command for probability.

Q: An engineer wants to determine how the weight of a gas-powered car, x, affects gas mileage, y. The…

A: From given data we have :

Q: A box contains 13 green marbles and 7 white marbles. If the first marble chosen was a green marble,…

A: given data, 13- green marbles 07- white  marbles 20 - total marbles if the first marble choswn was a…

Q: An engineer wants to determine how the weight of a gas-powered car, x, affects gas mileage, y. The…

A: Regression analysis: Regression analysis estimates the relationship among variables. That is, it…

Q: A normal distribution of BMCC MAT51 scores has a standard deviation of 1.6. Find the z-scores…

A: Given,standard deviation(σ)=1.6

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.07%. A random sample of 32 of…

A:

Q: A standard deck of cards contains 52 cards. One card is selected from the deck. Compute the…

A: The question is about probability Introduction : Total no. of cards in a std. deck ( N ) = 52 Total…

Q: coefficient of the variable %Taking. And state the F statistic if we wanted to test the hypotheses…

A:

Q: In a survey of 4069 adults, 737 oppose allowing transgender to use the bathrooms of the opposite…

A: Given n=4069 X=737

Q: You roll an ordinary six-side die once and then you toss a coin. Which of the following pairs of…

A: Given data you roll an ordinary 6 sided die once and  after wards you toss a coin.

Q: In a study of 420 comma 113 cell phone​ users, 139 subjects developed cancer of the brain or nervous…

A: Given n=420113 X=139 0.001 significance level

Q: In a survey of 2325 adults, 711 say they believe in UFOs. Construct a 99% confidence interval for…

A: Suppose, p is the population proportion of all adults, who say that they believe in UFOs.

Q: The time (in hours) required to repair a machine is exponentially distributed 1 with parameter 2 =…

A: Givenλ=13A random variable x~Exponential(λ=13)F(x)=P(X≤x)=1-e-xλ   ; x≥0

Q: Mrs. Burke's physics class has 109 students, classified by academic year and major, as illustrated…

A: From the provided information, Academic year Physics major Non-physics major Total Freshman 15…

Q: QUESTION 22 A group of 64 randomly selected students, from all MTH213 sections at Zayed University,…

A: Given Standard deviations=4 Sample size=64 Sample mean=74 Alpha=0.01

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: given data, normal distribution ,μ=183.6σ=2.5n=19 p(M&gt;182.8) =?

Q: 18. In 1974, Loftus and Palmer conducted a classic study demonstrating how the language used to ask…

A:

Q: Determine the mean and standard deviation of the values 6, 5, 8, 5, 5, 6, 7, 8, 4, 6

A: Solution: Given information: n= 10 Observation.  The formulae for the sample mean is  x=∑xn