Suppose X is a random variable with E(X2)=10 , and E(X)=2. Find the following: E(2X + 5) Var(X) Var(2X + 5)

Q: Perform the indicated calculation. 39 C₂ 39 C₂ = (Type a whole number.)

A: Know that  Combination formula.  nCx= n!/x!(n-x)!

Q: Use Excel to find the z-score for which the area to its left is 0.52. Round the answer to two…

A: Given Z score is 0.52

Q: liminary data analyses indicate that you can reasonably consider the assumptions for ng pooled…

A: Given: x¯1=13.10s1=3.90n1=n2=10x¯2=17.310s2=3.68 Level of confidence = 0.98

Q: Suppose that a box contains 8 cameras and that 5 of them are defective. A sample of 2 cameras is…

A: Given P=5/8=0.625 n=2

Q: mean score obtained from the sample in that treatment condition. Compute the overall means for the…

A: Two way ANOVA

Q: Google it: According to a recent report, 66% of Internet searches in a particular month used the…

A: From given information, n: Number of sample or sample size =22 X :Number of searches from sample…

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

A: The question is about probability Given :   To find : If one student is chosen randomly, prob. that…

Q: Below: Using the 5 Step Process, Test the Claims The World Data Atlas reports that the average Crude…

A: Given information: μ=18.6, σ=7.9, n=15

Q: 4.18 Given that g(x) > 0 has the property that 196² show that is a pdf. f(x, y) = g(x) dx = 1, 29…

A:

Q: In soccer, serious fouls result in a penalty kick with one kicker and one defending goalkeeper. The…

A: The question is about chi square test Given : Level of signif. ( α ) = 0.01   To test : claim that…

Q: 2 A mayoral candidate's Political campaign would like to determine the popularity of Their candidate…

A: Sampling is the process used in statistical analysis in which a predetermined number of…

Q: More than one teacher has given the following advice: choose answer C when blindly guessing among…

A: Given:

Q: 11. Preventing heart attacks: Medical researchers performed a comparison of two drugs, clopidogrel…

A:

Q: In a moderately skewed distribution, the arithmetic mean is  10 units and the mode is  7 units, find…

A: Formula for Median If mean and mode are given  Median = ( Mode + 2 * Mean ) / 3

Q: Write the integral that would define the mgf of the pdf 1 1 π1+x² Is the integral finite? (Do you…

A:

Q: The average YouTube user spends 40 minutes per session, using YouTube (μ = 40), and σ is unknown.…

A:

Q: Length of a Walk (in Miles) Class 0.34-0.40 0.41-0.47 Frequency 7 13

A: Formula used for midpoint . (upper class + lower class)/2

Q: If you use a 0.02 level of significance in (two-tail) hypothesis test, what is your decision for…

A: Here, α=0.02 Hypotheses: H0:μ=750Ha:μ≠750

Q: Explain how you will use Paired Sample t-test in any research with a suitable example.

A: Paired sample t-test The paired sample t-test, sometimes called the dependent sample t-test, maybe a…

Q: Suppose a study reported that the average person watched 3.46 hours of television per day. A random…

A:

Q: In a recent year, the mean number of strokes per hole for a golfer was approximately 3.6. (a) Find…

A:

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

A: Given data is   A B C Total Male 11 2 15 28 Female 18 3 10 31 Total 29 3 25 59

Q: Each bit transmitted through a channel has a 10% chance to be transmitted in error. Assume that the…

A: Dear student, If you find this solution helpful please upvote ? it.   We know,  If X ~ Bin(n,p)…

Q: A psychologist is studying the self image of smokers, which she measures by the self-image (SI)…

A: Givenstandard deviation(σ)=82confidence level=95%Margin of error(E)=15

Q: PLEASE MAKE A NORMAL DISTRIBUTION CURVE FOR THIS. DIGITAL ONLY NOT HANDWRITTEN

A: GivenMean(μ)=65.33standard deviation(σ)=31.59sample size(n)=7

Q: A researcher collected sample data for 11 middle-aged women. The sample had a mean serum cholesterol…

A: Given datan=11mean=190.4standard deviation=6.6confidence interval=95%

Q: Consider the following scatter and residual plots:

A: Correlation is a relationship that is quantitative in nature and is being measured in terms of…

Q: OA. Do not reject Ho. There is insufficient evidence that the two means are different OB. Do not…

A: Given: x¯1=8s1=4n1=25x¯2=13s2=9n2=25Confidence level = 0.99 α=0.010

Q: Find the indicated critical value. 20.01 Click to view page 1 of the table. Click to view page 2 of…

A: We need to compute the z-critical value. The level of significance is α=0.01.

Q: Students at Roseville High School took an IQ test with a mean of 100 and a standard deviation of 15.…

A: As per our guidelines we are suppose to answer only one question1)GivenMean(μ)=100standard…

Q: 7. Test the hypothesis that the following set of 200 numbers are 'random digits', that is, each…

A: The question is about categorical data analysis using chi square test Given : To test the hypo.…

Q: Paint 1 Paint 2 Paint 3 Paint 4 Paint 5. 697 694 695 677 699 708 694 702 708 695 697 713 703 702 694…

A: Given: Paint 1 Paint 2 Paint 3 Paint 4 Paint 5 697 694 695 677 699 708 694 702 708 695 697…

Q: An electronics manufacturing process has historically had a mean completion time of 75 minutes. It…

A: GivenMean(μ)=72standard deviation(s)=9sample size(n)=14significance level(α)=0.05

Q: Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0…

A: Given Z=0.35 Find  P(Z<0.35)=?

Q: 9. In order to test the effectiveness of a new drug in treating a particular disease, seventy…

A: Formula Used: χ2-statistic = ∑(O-E)2E Where, O = Observed value E = Expected value

Q: The table below shows the average weekly wages (in dollars) for state government employees and…

A: Given: Sample size n = 10 y^ = 1.386X + 12.604 Formula used: Prediction Interval = Y^ ± tα/2…

Q: QUESTION 7 Calculate MAD (Mean Absolute Deviation) based on the given data below 45 11 38 35 37 45…

A: As per our guidelines we are suppose to answer only one question7)Given data…

Q: A survey in San Diego was given and found that the mean commute time in 2014 was 26.5 minutes. A…

A:

Q: A study was conducted on students from a particular high school over the last 8 years. The following…

A: Using Excel formula "=NORM.S.INV(0.67)", the value of z for 67th percentile is obtained as 0.44.

Q: Number of classes: 8 Data set: Reaction times (in milliseconds) of 30 adult females to an auditory…

A: since the minimum number is 291 and greatest is 514 so we will make class of width 30 as it does not…

Q: A. Find the value of the test statistic. (Round your answer to two or more decimal places.) B. Find…

A: Given:

Q: The table shows the total square footage (in billions) of retailing space at shopping centers and…

A:

Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…

A: here AS PER GUIDELINES I HAVE CALCUTED 3 SUBPARTS , PLZ REPOST FOR REMIANING PARTS WITH NOTE I NEED…

Q: Suppose the final exam scores in Statistics and Probability of all SHS students at Laguna State…

A: Given : Claim :  True mean of final exam score in Statistics & Probability of all SHS student is…

Q: Assume that adults have IQ scores that are normally distributed with a mean of µ-105 and a standard…

A: Mean(µ) = 105Standard deviations (σ) = 15X ~ N (µ, σ )= N(105, 15)

Q: or the data? The answe

A: hrs vehicles 9 A.M 6.2 11 A.M 7.4 1 P.M 7.5 3 P.M 6.6 5 P.M 3.9 The quadratic model…

Q: Diameters of bolts produced by a particular machine are normally distributed with mean 0.760 cm and…

A: GivenMean(μ)=0.760standard deviation(σ)=0.012specifications call for diameters from 0.720 to 0.780…

Q: efore changes to its management staff, an automobile assembly line operation had a scheduled mean…

A: The following information has been given: The hypothesized mean is μ0=12.2. The population standard…

Q: An Internet provider contacts a random sample of 300 customers and asks how many hours per week the…

A:

Q: , 160, 175, 162, 180, 240. The respective after weights are 142, 171, 162, 142, 171, 235.

A: before  after  150 142 160 171 175 162 162 142 180 171 240 235 Here each sample,…