What correction do we make to a calculation of a variance to assure that it is not a biased estimator of the population? O use N - 2 use N-1 as the denominator of the calculation use N-1 as the numerator of the calculation use the population N

Q: What is (b) p(z>-0.15) = ?  Answer choices are .3945, -1,04,.5596,.6055,.4404

A: Given that  (b) p(z>-0.15) =?

Q: In 2014, 2.756 billion dollars of e-cigarettes were sold worldwide. Fill in the table with the 2014…

A: part-3: a) since 2010 lies between 2008-2011, so it is: Interpolating. b) To predict worldwide sales…

Q: The null and alternative hypotheses for a population proportion, as well as the sample results, are…

A: given data  hypothesis : H0 : p = 0.5H1 : p < 0.5n =100x = 38p^ = xn = 38100 = 0.38

Q: Buoyancy aids in water sports are tested by adding increasing weights until they sink. A club has…

A: From given data we have : μ=6σ=0.6

Q: What sample size might be better and why- 3 or 300? For the above problem, if the overall score of…

A: Examining the academic achievement of a group of third graders at a nearby school in social studies.…

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Q: Download the dataset "HT_4136.xls" and conduct a two-sample t-test using Excel. (You can find the…

A: Given data set: X1 X2 101.03 97.51 99.92 97.66 100.36 102.35 100.87 102.52 106.58 99.43…

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A: To compute the probability of three occurrences in one time period using R, we can use the dpois…

Q: A study showed that the proportion of high school students in the United States who use computers…

A: Given,Claim:The proportion of high school students in the united stateswho use computers for…

Q: Number out of service  Frequency  0 8 1 48 2 83 3 128 4 74 5 11 6 9 7 3 8 0 9 1     The transit…

A: Given that: Number out of service  Frequency  0 8 1 48 2 83 3 128 4 74 5 11 6 9 7…

Q: A binomial experiment with probability of success p=0.21 and n=8 trials is conducted. What is the…

A: P(success) = p = 0.21 sample size(n) = 8 x = no. of success P(x<3) = ?    P(x=X) =…

Q: Explain what a null hypothesis and an alternative hypothesis are. Why are these two hypotheses…

A: The null and alternative hypothesis are used in statistical hypothesis testing . The null hypothesis…

Q: A researcher measures the time (in seconds) it takes a sample of 26 participants to respond to a…

A: Here the given information is       A researcher measures the time (in seconds) it takes a sample of…

Q: QUESTION 2 Given the following data: ΣΧ Συ 21 25 What is the correction coefficient (r)? Σχ2 143 Σy…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

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Q: q4 Consider a large population of beetles in which in which 80% have red spots, but the rest are…

A: Given that: Success probability, p=0.80

Q: A bicycle shop equips 60% of their bikes with a water bottle holder. 55% of the bikes they sell have…

A: vent A : bikes have water bottle holderevent B : bikes have kickstand P(A) = 0.60P(B) = 0.55P(A∩B) =…

Q: K Find the probability of winning a lottery with the following rule. Select the five winning numbers…

A: Given that Sample space=S=(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,…

Q: nsider a population with 1,600 values which exhibits a normal distribution. Assume that the mean is…

A: GIVEN DATA, normal distributionμ=41σ=8we have to answer forthe given data.

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A: Given that Z is a standard normal random variable,  We have to find the value of Z  Where the areas…

Q: Which events are probably independent? drawing a red M&M candy from a package and then drawing a…

A: Independent events are those events whose happening or phenomena is not dependent on any other…

Q: Which events are disjoint?

A: To identify the disjoint events.  In the disjoint events, there is no common element. These are the…

Q: Vertical banded gastroplasty is a surgical procedure that reduces the volume of the stomach in order…

A: From given data we have : n=82 x=59 so, p^=5982=0.7195

Q: 1. Theorem: Let X = (X₁, X2, ..., X₁)' be a r.s. from N(u), where μER and >0 and n ≥ 2. Then, a. X…

A: In this question, we are given a random sample of size n, X=(X1,X2,...,Xn), from a normal…

Q: High blood pressure: A national survey reported that 34% of adults in a certain country have…

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Q: Dataset Available: Download sexrat-6-e-059-2.xlsx The data set, lists the sexes of children born in…

A: The purpose of this question is to determine whether the sex assigned at the birth of the…

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Q: Q scores are normally distributed with μ = 100 and σ = 15. Find the IQ score separating the highest…

A: given data, normal distribution,μ=100σ=15IQ score separating the highest 4%  all scores.

Q: 75. Healthy bones The recommended daily allowance (RDA) of calcium for women between the ages of 18…

A: Given that The Minitab output below displays the results of a significance test.    Sample size…

Q: THE BELL CURVE DEFINED 0.4 0.3 0.2 0.1 0.0 E 0.1% -30 2.1% 13.6% -20 34.1% 34.1% -10 Base on this…

A:

Q: One personality test available on the World Wide Web has a subsection designed to assess the…

A: Given: Website reports that mean=140 Actual mean=146 actual standard deviation=28

Q: 5- THE BELL CURVE DEFINED 0.4 0.3 0.2 0.1 E 0.0 0.1% -30 2.1% 13.6% -20 -10 Base on this grapy. Find…

A: given data  '

Q: P(y > 4)M = 2 P(1 ≤ y ≤4) M = 2

A: The question is about Poisson distribution Introduction : If y is Poisson r.v. then it's p.m.f is…

Q: Treatment for depression: Researchers conducted a study of 18 patients whose depression had not…

A: Given that: Sample size, n=18

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Q: A life insurance company sells a term insurance policy to a 21-year-old male that pays $100,000 if…

A: Given that: The expected value of X is, E(X) = $304 The standard deviation of X is, SD(X)= $9002

Q: A school district is considering moving the start of the school day at Groveland High from 8:00 a.m.…

A: The correct option is "option A"  Explanation: The two samples are independent Samples are taken…

Q: You wish to test the following claim (Ha) at a significance level of a = 0.05. H₁: p=0.4 H₁: p <0.4…

A: From the provided information, The hypotheses are as follow: H0: p = 0.4 Ha: p &lt; 0.4 Sample size…

Q: The General Social Survey (GSS) is a survey administered to a random sample of adult Americans by…

A: given data sample size (n) = 2500favorable outcomes (x) = 725p = proportion of customers that are…

Q: logy company produced 197 doses of somatropin, including 10 which were defective. Quality control…

A: Given Total doses=197, D=defective=10, n=15 =sample size

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A: x Lyme disease y Drowning Deaths The correlation coefficient is computed using the formula: r =…

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A: The variable in this test is the students' first choice for college major.

Q: Download the dataset "HT_4029.xls" and conduct a two-sample t-test using Excel. (You can find the…

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Q: Download the dataset "HT_3341.xls" and conduct a two-sample t-test using Excel. (You can find the…

A: Given data set:

Q: tail, you win $6. if you play this game many times, will you come out ahead? (i.e. will you gain…

A: The game of tossing a biased coin. P(H) = 25 and P(T) = 35 To find the expected value.

Q: 4. Let X^N (0,8²). Find the CRLB for variances of the unbiased estimator of t(0)= 0².

A: Given that  X follows Normal with mean = 0 and variance Θ2. Note : According to our guidelines we…

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A: Given:-            The high school teacher was also interested in whether there is a gender…

Q: K When testing for current in a cable with eleven color-coded wires, the author used a meter to test…

A: Given that. Number of cable=11 Pair of cable test=3

Q: Can someone help with coefficient and interpretation value please

A: Given The regression equation is as follows: Td=6.0536d+0.7595 r=0.9778