If your null and alternative hypothesis are: H0:μ=40�0:�=40 H1:μ<40�1:�<40 Then the test is: right tailed two tailed left tailed

Q: You are to play a game of chess against a random opponent on the web. You say to yourself "There is…

A: Probability of winning=75%

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Q: Fill in the table below: Find : Find 8: Find sy : 8 9 Find r: 3 لا 3 لیا 4 0 x- T 3 y-y -1 Find ÿ:…

A: x y 8 9 3 3 4 0

Q: Many high school students take the AP tests in different subject areas. In one year, of the 144,140…

A: given data  n1 = 144140   x1 = 84545p^1 = x1n1 = 84545144140 = 0.5865 n2 = 216298    x2 = 126501p^2…

Q: The mean wingspan of a sample of 31 birds of a particular species is 30 inches.  The standard…

A: Sample size n =31 Sample mean=30 Population standard deviation =4

Q: For n = 40 and x = 0.8, use the normal distribution to approximate the following probabilities. a.…

A: n = 40 π = 0.8

Q: 12.2.5Truck Unloading Times A warehouse manager is interested in the possible improvements to labor…

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A: According to the given information in this question Population proportion= 0.23 sample size = 380…

Q: Assume that a sample is used to estimate a population proportion (P). Find the margin of error…

A: Answer: From the given data, Sample size(n) = 339 X = 168 95% confidence interval,

Q: The life of light bulbs is distributed normally. the standard deviation of the lifetime is 32 hours…

A:

Q: Data on 12 randomly selected athletes was obtained concerning their cardiovascular fitness (measured…

A: It is given that  Ski = 87 - 1.6Treadmill  sample size n = 12 Level of significance = 5%…

Q: The number of wins in the past 30 seasons by the San Francisco Giants are as follows: {107, 77, 73,…

A: First class: 55-59. Class width=5 Minimum value=55 and Maximum value=107. Number of classes is…

Q: Watch your cholesterol: The mean serum cholesterol level for U.S. adults was 203, with a standard…

A: Mean=203 Standard deviation =41.7 Sample size =113 We have to find the probability that a...Sample…

Q: Data on 4400 college graduates show that the mean time required to graduate with a​ bachelor's…

A: The sample mean = 5.65 Standard deviation is 1.15 The sample size, n is 4400.          From the…

Q: LINEAR REGRESSION 2) During the last three months, on 10 occasions a sound equipment store appeared…

A: Number of commercials 2 5 1 3 4 1 5 3 4 2 Sales volume($100) 50 57 41 54 54 38 63 48 59 46

Q: If A and B are independent events P(A) = 0.2 P(A or B) =0.63 Find P(B)

A: Consider, If A and B are independent events, P(A)=0.26 and P(A or B)=0.63

Q: Use Table V in Appendix A to determine the t-percentile that is required to construct each of the…

A: a) Confidence level=95%, degree of freedom=16 b) Confidence level=95%, degree of freedom=24 c)…

Q: State the hypotheses. Ho: All the means are equal. H: At least one mean is different from the…

A: Cuckoo birds are in the habit of laying their eggs in other birds' nest. The other birds adopt and…

Q: Richard has been given a 6-question multiple-choice quiz in his history class. Each question has…

A: n=6, p=2/3 , X~Binomial(n=6, p=2/3)  Let X be the number of incorrect question. p be the probability…

Q: Give the test statistic and the p-value. Round your answer for the test statistic to two decimal…

A: In 2007 a Harvard psychologist set out to test her theory that "Mind-Set Matters." She recruited 75…

Q: l land with the buttered side down when dropped. Identify the null and alternative hypotheses to…

A: Given that  n=55 , X=21 X=buttered toast will land the buttered side down p=50%  Note: According to…

Q: The following data represent crime rates per 1000 population for a random sample of 46 Denver…

A: We have given the data representing crime rates per 1000 population for a random sample of 46 Denver…

Q: A researcher is using a two-tailed hypothesis test with α = .05 to evaluate the effect of a…

A: The given significance level is 0.05 and the critical region are t=±2.080

Q: Based on these sample results and significance level equal to 0.05, what is the sum of squares…

A: The given values are x¯1=62.1,x¯2=58.94,x¯3=71.2.

Q: LINEAR REGRESSION 2) During the last three months, on 10 occasions a sound equipment store appeared…

A: To find out the answers, we need to perform linear regression analysis using MS Excel.   Here are…

Q: In a clinical trial, 27 out of 892 patients taking a prescription drug daily complained of flulike…

A:

Q: The mean and the standard deviation of the sample of 100 bank customer waiting times are x = 5.09…

A: (1)   Obtain the 95% confidence interval for the population mean of all possible bank customer…

Q: QUADRATIC REGRESSION 1) The following table shows the population in a certain country between the…

A: This question focuses on the application of quadratic regression in order to estimate population…

Q: think H1 here should be mean < 93

A: The sample size n is 18.

Q: Arrange the steps to solve the recurrence relation an= an-1+6an - 2 for n ≥ 2 together with the…

A: Arrange the steps to solve the recurrence relation an=an-1+6an-2 for n ≥2 together with the initial…

Q: Suppose 208 subjects are treated with a drug that is used to treat pain and 50 of them developed…

A: sample size(n)=208x=50sample proportion(p^)=xn=50208≅0.2404significance level(α)=0.05

Q: researcher takes sample temperatures in om Atlanta (Group 2). Test the claim tha mperature in…

A: For San Franscico (x1): sample x1 (x1-x̄1)2 1 77.4 19.9809 2 94.8 167.1849 3 77.0 23.7169…

Q: (b) -2.13 The area of the shaded region is 0 X

A: As per our guidelines we are suppose to answer only one questionkindly post the remaining question…

Q: 9. Summarize the results from an analysis (two-way ANOVA) performed on the below. Assume big…

A: According to the hypotheses and the graph, factor A1 has a significant main effect, but factor A2…

Q: A study of the time spent shopping in a particular supermarket showed an approximately uniform…

A: The question is about uniform distribution Introduction : Let X is a continuous r.v which follows…

Q: Assume the random variable x is normally distributed with mean μ = 85 and standard deviation o=5.…

A: X is random variable . μ=85  and σ=5 It is normal distribution. Here we need P(70&lt;x&lt;83) we use…

Q: Determine the t-value in each of the cases. Click the icon to view the table of areas under the…

A: We have given that,  Degree of freedom (df) = 20 and significance level = 0.10 ( right tail)

Q: Given the following data (suppose x is the explanatory variable and y is the response variable):…

A: The following data (suppose x is the explanatory variable and y is the response variable): x y…

Q: 05- Given a normal distribution with mean of 13 & standard deviation of 2. What is the P(11 ≤ x ≤…

A: X~N( μ , ?)   μ=13 , ?=2   Z-score =( x - μ )/?

Q: After calculating the sample size needed to estimate a population proportion to within 0.05, you…

A: Maximum allowable error (B) = 0.05  Given sample size (n) = 1000  when nothing is known about true…

Q: Nursing Majors Non-Nursing Major 651 1294 1186 2480 Males Females 839 Total 1490 Total 1945 2025…

A:

Q: A pediatrician wants to determine the relation that exists between a child's height (x) and head…

A: Given that Correlation coefficient=0.807 Regression equation y=0.217x+7.18 We have to find the…

Q: Use any value and figure out whether it's qualitative or quantitative, is it discrete or continuous,…

A: Sure! For this exercise, let's use the value "age = 25".

Q: Consider the data set 9 6 2 6 7 2 7 1 4 8 9 Find the average (mean): Find…

A: Answer: Given sample data is: 9,6,2,6,7,2,7,1,4,8,9 Sample size(n) = 11

Q: e the formula to find the standard error of the distribution of differences in sample means, X₁ -…

A: n1=45, n2=45

Q: Can I get an interpretation and a conclusion on this solution

A: The regression equation for the given data is: Temperature change = 0.667 + 0.108X1 + 0.226X2 +…

Q: What distribution could be used to approximate a t-distribution with v=90 degrees of freedom?

A: degrees of freedom v=90

Q: Given a BSC with p = 0.8 and P = 0.7 (1) Compute the output probability distribution: 9₁ and 9₁.…

A: (1) The output probability distribution for a Binary Symmetric Channel (BSC) with crossover…

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A: Data given 19,24,18,17,13,30,11,10,22,5

Q: Use the standard normal table to find the z-score that corresponds to the cumulative area 0.9195. If…

A: Let Z be the random variable standard normal distribution with mean 0 and standard deviation 1.