A test has 20 questions with 4 choices for each questions. If you were guessing on each question, Find the following probability (3 decimal places): A) P( guessing 5 Correctly)                                                                                         B) P( guessing at least 1 Correctly)

Q: Match the appropriate probability distribution functions shown in column B with the statistic…

A: The t-test/t distribution is used when the population standard deviation is unknown. The…

Q: Conduct a hypothesis test to determine if the average number of fatalities for all airlines between…

A: Solution: Given information: n=50 Sample size First we need to find sample mean and sample standard…

Q: #4 A bowl contains 5 red beads, 6 blue beads, and 3 violet beads. If 3 beads are picked at random,…

A: GivenNo.of red beads=5No.of blue beads=6No.of violet beads=3Total no.of beads=14

Q: A sample of 14 forest deer mice have an average body length of x = 91.1 mm. Do forest deer mice on…

A: Z distribution has utilized

Q: determine the percentage of song bouts that have durations within a. one standard deviation to…

A: It is given that  Mean, μ = 12.59 Standard deviation, σ = 5.31 Z-Score, Z = ( X - μ )/σ

Q: () a. Construct a 90% confidence interval. Express the percentages in decimal form. <p<(Round to…

A: It is given that  Favourable cases, X = 161 Sample size, n = 430 + 161 = 591

Q: 6.103 Gibbon Song Duration. A preliminary behavioral study of the Jingdong black gibbon, a primate…

A:

Q: (c) Use a smoothing constant of a = 0.6 to compute the exponential smoothing forecasts. (Round your…

A: Forcast value = Alpha*(yt-1)+ (1-aplha)*(y't-1) y'=corresponding forcast value

Q: Use R commander to find the z-score z0.06

A: To find Z-score in R, we use the following process:  first define the variable X  X&lt;-c(…..) Find…

Q: tire company makes tires that have a normal distribution with a mean of 65,000 miles with a standard…

A: Given that, a tire company makes tires that have a normal distribution with a mean of 65,000 miles…

Q: Suppose a random sample of 50 basketball players showed the average height to be 78 inches. Also,…

A: From the provided information, Population standard deviation (σ) = 1.5 Sample mean (x̄) = 78 Sample…

Q: Find the necessary confidence interval for a population mean μ for the following values. (Round your…

A: Solution-: Given: x¯=0.85,n=120,s2=0.084,c=0.0.10 We want to find 90% C.I. for μ?

Q: please answer the wrong ones. box the answer

A: Given data: x y 99.2 28.9 101.2 27.8 102.6 26.9 103.1 25.1 105.3 22.9 107.2 21.4…

Q: You wish to test Ho:μ = 53.2 versus Ha:μ > 53.2 at a significance level of 0.01. You obtain a sample…

A: GivenThe null and alternative hypothesis isH0:μ=53.2Ha:μ&gt;53.2significance level(α)=0.01sample…

Q: A survey of voters in past election shows the following:   Democrat (D) Republican (R) Total Male…

A: Democrat (D) Republican (R) Total Male (M) 20 30 50 Female (F) 32 18 50 Total 52 48 100

Q: In Idaho, bass fish were collected in 30 different lakes to measure the amount of mercury in the…

A: given;sample size(n) =30sample mean(x¯)=0.594standard deviation(s) =0.4329confidence level 99%

Q: Categorize the following as either an experiment, prospective observational study, or retrospective…

A: In observational study, samples are the researcher just observes the effect of a particular variable…

Q: Cans of soda vary slightly in weight. Given below are the measured weights of seven​ cans, in…

A: Given: Sample size n = 7 Formula Used: Mean X = ∑Xin Median = 2(n+1)4thterm Outlier limit =…

Q: Please answer the wrong ones

A: Regression analysis are used to measure the predicted value based on the another variable. It…

Q: Mapua will be sponsoring a workshop for 4 faculty next summer. Twenty male faculty and fifteen…

A: It is given that twenty male faculty and fifteen female faculty enlisted for the training.

Q: Refer to the accompanying data set and construct a 90​%confidence interval estimate of the mean…

A: Solution: Given information: n =40 Sample size of male m= 40 sample size of female

Q: How did you find the critical Value in regards to my z Table? If you could help me with figuring…

A: The level of significance is 5% and the test is right tailed.

Q: #2 A bowl contains 3 yellow beads, 21 green beads, 12 blue beads, and 6 red beads. if 1 bead is…

A:

Q: Find the probability of throwing a sum of 5 at least 6 times in 10 throws of a pair of fair dice.

A: It is given that a pair of fair dice thrown 10 times.

Q: Which of the following can increase effect size? Select one: O a. increase the distance between…

A:

Q: In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to…

A: Solution-: Here, we use proportion test (Z-test) Given: x=1288,n=6959,P0=0.20,α=0.01 We want to  (a)…

Q: (b) Using statistical software, develop a quadratic trend equation that can be used to forecast…

A: Given data:

Q: A car dealer recommends that transmissions be serviced at 30,000 miles. To see whether her customers…

A: We state the hypothesis for the above question,  H0: the owners are having their transmissions…

Q: Toyota needs to determine the average service time to check and repair 80% of their customer’s…

A: Here, σ=300 secs60=5 minutes, z=0.84, x=30 minutes.

Q: For the following three questions assume a mean of 60, a standard deviation of 4, and a normal…

A:

Q: Assuming 3% of the callers are amenable to a specific sales pitch and purchase your product.  What…

A: It is given that p = 0.03 and n =2,000.

Q: Many people feel that cereal is healthier alternative for children over glazed donuts. The table…

A: The sample mean and sample standard deviation are computed as follows: x=∑i=1nxin…

Q: Students Who Major in Business It has been reported that 20.4% of incoming freshmen indicate that…

A: According to the given information in this question We need to find 96% confidence interval

Q: Question 4 a) The final grades of forty students were randomly selected, recorded and inputted into…

A: According to the given information in this question We need to find p value and conclusion of the…

Q: Estimate the minimum sample size needed to achieve the margin of error E = 0.029 for a 95%…

A: Suppose p is the population proportion.

Q: In the US, we categorize adolescent girls as either anemic, border line anemic or as having a normal…

A: Solution-: Suppose 10% of adolescent girls are anemic, 15% are border line anemic and the rest have…

Q: a. Express the original claim in symbolic form. Let the parameter represent the adults that would…

A: Claim: A minority of adults would erase all of their personal information online if they could. A…

Q: How many different six letter combinations can be made of four consonants and two vowels out of…

A: It is given that there are eight consonants and five vowels.

Q: . Find the 38th percentile of the standard normal distribution. What is the theoretical coefficient…

A: Let P38 be the 38th percentile of the standard normal distribution.  Let Z denote the standard…

Q: What type of pattern exists in the data? O The time series plot shows a trend pattern with no…

A: Type of pattern: Excel Procedure: Enter the time series values and quarter values in Excel. Select…

Q: Determine the range of the following data: 13,32,31,21,24,36,43,67,64,58,62,63,72,83,52,69,81 ,77

A: given data,13,32,31,21,24,36,43,67,64,58,62,63,72,83,52,69,81 ,77 here we have to find out the range…

Q: Ancient insect lives are approximately uniformly distributed throughout the year. They can be said…

A: given data X~U(0,52) uniform distribution probability function  f(x) = 1b-a = 152-0 = 152

Q: #2 A bowl contains 3 yellow beads, 21 green beads, 12 blue beads, and 6 red beads. if 1 bead is…

A: GivenNo.of yellow beads=3No.of green beads=21No.of blue beads=12No.of red beads=6Total no.of…

Q: When constructing a research design and the researcher has gender as a variable, please answer the…

A: Gender Is qualitative or categorical variable, that can be divided into two categories.

Q: In a recent year, Delaware had the highest per capita annual income with  $51,803 . If  =σ$4850 ,…

A: given data  normal distribution μ = 51803σ = 4850n = 39P(x¯&lt;48800) = ?

Q: The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on…

A: For the distribution of the effectiveness of the drug in terms of reduction of systolic blood…

Q: A study of the amount of rainfall and the quantity of air pollution removed produced the…

A: Given that    X Y X \cdot YX⋅Y X^2X2 Y^2Y2   4.3 127 546.1 18.49 16129   4.5 121 544.5 20.25…

Q: Scenario: A researcher wants to know whether a hard copy of a textbook provides additional benefits…

A: The test is to check whether people who read the passage on a piece of paper will remember…

Q: Express the confidence interval 0.111<p<0.999 in the form p±E. P±E=+

A: It is given that  C.I. = 0.111 &lt; p &lt; 0.999

Q: Use this data and build a model to forecast annual maintenance expenses based on the weekly usage in…

A: Given the data to calculate the SSE.