only) to confirm or dis

Q: with a standard deviation of 0.6 ounces. If the manufacturer decides on a significance level of 0.05…

A: Here use single sample t test

Q: Researchers suspect that 18% of all high school students smoke at least one pack of cigarettes a…

A:

Q: A. Suppose an admissions office determines that 40% of students who are accepted actually enroll in…

A: Given: The probability that students actually enrolled, p=0.40 Number of students, n=800

Q: A marketing representative of XYZ product conducted a blind taste test. One hundred fifty regular…

A:

Q: Consider the sample data 2, 4, and 6 with population standard deviation of 1.633. Compute the…

A: The central limit theorem states that the distribution of sample means approximately a normal…

Q: How many computers? In a simple random sample of 145 households, the sample mean number of personal…

A: The random variable number of personal computers follows normal distribution. We have to construct…

Q: In a t-distribution, what is the area under the curve that is to the right of t=2.048 and with…

A: Given,degrees of freedom(df)=28and t=2.048

Q: Suppose you have to construct a 98% confidence interval for a 10-sample study, what is the…

A:

Q: A recent study investigated whether cell phone users experience separation anxiety when they cannot…

A: Cell Phone (CP) No Cell Phone (NCP) 113 118 116 162 120 131 110 169 125 106 89 117 126…

Q: Giving a test to a group of students, the grades and gender are summarized below   A B C Total Male…

A:

Q: The following table represents the survey conducted in a school.   Male female Chicken fried steak…

A:

Q: Direction: Provide step-by-step solutions to the given problem below. Write your answers on the…

A: Population - 2,5,6,9,11,13 Consider sample size (n=2) from population We have to calculate mean and…

Q: Family Sales in Period Income Pesos (millions) (thousands) 1 20 600 2 30 800 3 25 1,100 4 28 1,600 5…

A: Let  X=family income  Y=Sales in Pesos  Data given  X:20,30,25,28,31  Y:600,800,1100,1600,1800 Note:…

Q: ( — а)2 (a) Show that Var(X)<

A: Let X1,X2,.....,Xn be a random sample from a population r.v. X a. Var[X]≤(b-a)24      We try to…

Q: The shape of the T-distribution curve is wider than the normal curve because, O a. it has more…

A: If population standard deviation is known and large sample size i.e, n &gt; 30 then we use z-…

Q: 3. By using the appendix tables, test the following hypotheses by estimating p-value. Use a = 0.05.|…

A: The random variable X follows Chi-Square distribution. We have to test the hypotheses for the given…

Q: 3. Two sections of Class IX having 30 students each appeared for mathematics olympiad. The marks…

A:

Q: In a hotel, two dishes- vegetables and non-vegetables are demanded. 80% of its male customers order…

A:

Q: A global research study found that the majority of today's working women would prefer a better…

A: Let there are n trials and each having two outcomes - Success and Failure. The trials are…

Q: 3. The heart rate for a group of patients at a local hospital is normally distributed with a mean of…

A: Given that mu = 97,s.d=18

Q: A plant biologist is interested in studying the height of sunflowers. He measures a large sample of…

A: Given: μ = 112 σ = 16

Q: 3. A bank teller serves customers standing in the queue one by one. Suppose that the service time X;…

A: Given that  We have to find

Q: For the given confidence level and values of x and n, find the following. x= 46, n=96, confidence…

A: Given,n=96 ,  x=46α=1-0.95=0.05α2=0.025Z0.025=1.96      (from Z-table)

Q: A company that sponsors LSAT prep courses would like to be able to claim that their courses improve…

A: There are two dependent samples which are initial test and post test. We have to find the test…

Q: English 35 23 47 17 10 43 96 28 Mathematic 30 33 45 23 8 49 12 4 31

A: We have given that,  English (X) :- 35, 23, 47, 17, 10, 43, 9, 6, 28 Mathematics (Y) :- 30, 33, 45,…

Q: There are 4 red and 5 green balls in a bag. If two balls are drawn one af another at random without…

A:

Q: Assume that a sample is used to estimate a population mean u. Find the 90% confidence interval for a…

A:

Q: 1) Let X be the random variable with the following distribution table. 3 Sum Pr(X = z) z Pr(X = z)…

A: List of formulae : i) For probability distribution total sum of probability is 1 i.e.   ∑Pr(X=x) = 1…

Q: Company XYZ know that replacement times for the portable MP3 players it produces are normally…

A: We have given Mean(µ) = 3Standard deviations (σ) = 1.1X ~ N (µ, σ )= N (3, 1.1)

Q: In how many ways can 8 persons be seated around a table with 8 chairs if two individuals wanted to…

A:

Q: randomized experiment led to the following data:  Temperature Density 100 21.8 21.9 21.7 21.6 21.7…

A:

Q: A) Y=1566.67x + 1716.67 B) Y= 3x + 2000 C) Y= 4700x + 1500 D) Y= x + 1700

A: Introduction: It is required to obtain the linear equation to approximate the data distribution…

Q: The average amount of money that people spend at Don Mcalds fast food place is $7.5200 with a…

A:

Q: In the US, the systolic blood pressure is normally distributed with a mean of 123 mmHg and a…

A:

Q: Let x represent the number of students who register for a statistics course. What values can the…

A: Here use basic of random variable

Q: If N = 48, find tcv and use it to draw a t distribution with the rare and common zones labeled.…

A: The t – critical values would be obtained from the t – distribution at certain alpha% level with…

Q: Part I The binomial distribution has p = 0.5 and n = 20. Find P(X < 8). Use Table II, Appendix A.…

A:

Q: What proportion of the standard normal distribution lies outside the interval ±0.2525? Please use…

A: From the given information we find the solution.

Q: SUB: EXPLAINING THE GAMBLER'S FALLACY TO 17TH CENTURY FRENCH GAMBLERS While you are in seventeenth…

A: GivenA Duke losing lot of money playing Roulette. The Duke is under assumption that since he is…

Q: A recent study investigated whether cell phone users experience separation anxiety when they cannot…

A: There are two independent samples which are Cell Phone and No Cell Phone. We have to find the effect…

Q: tind the AREA and shad the CURVE 44 To the left oF 2- 3.24

A: We need to find the area left to the  value z = 3.24 and shade the normal curve.

Q: Problem #1 The Senior high school students of EClaro wanted to raise money to have their graduation…

A: Histogram : A bar graph may be a graphical illustration that divides a group of information points…

Q: Given: n = 6, 90% confidence level, critical values in two tails. Find the critical values, then…

A:

Q: Find a 95% confidence interval for the mean of the depths of all connector modules made by a certain…

A: Formula for confidence interval  95% C.I  = (  x̄     ±     Zc*?/√(n) )

Q: QUESTION 4 A confidence interval is a range of numerical values that one hopes the population…

A: Given that  A confidence interval is a range of numerical values that one hopes the population…

Q: 3. Suppose W is a continuous random variable with density function if x 1, fw (x) = |1- |2| if –1<…

A: Let W  is a continuous random variable with a density function                  fW(x)=0           if…

Q: From the data given below compute the index number for 1998 using Lasp= weighted aggregative method.…

A:

Q: Weekly demand at a grocery store for a brand of breakfast cereal is normally distributed with a mean…

A:

Q: What happens to availability if the mean time between failures (MTTR) gets close to zero? Is it…

A:

Q: Fridays on the following 13th of the same month. Use a 0.05 significance level to test the claim…

A: