if you make guesses on 4 multiple choice test questions each with 5 possible answers, what is the probablity of getting all correct?

Q: Standard normal area P(1.25 0.54) а. b. С.

A:

Q: What is the probability of flipping a quarter four times and it landing on Tails each time? Leave yo...

A: The outcomes of flipping a quarter are {Head, Tail}.

Q: Marks obtained by 9 students in statistics are given w: 52, 75, 40, 70, 43, 40, 65, 35, 48. Calculat...

A: Given:  marks obtained of 9 students are given  Xi: 52,75,40,70,43,40,65,35,48 find arithmetic mean ...

Q: What NCAA college basketball conferences have the higher probability of having a team play in colleg...

A: Given: period = 20 years ACC Rank = 10 SEC rank = 8 ACC and SEC = 1  

Q: In a certain community, on a particular weekday evening, the television is being watched in 85% of t...

A:

Q: In a business, the Chief Executive Officer wants to know if his workers are for or against mandatory...

A: Given that  Level of significance=0.10 We have to find  What is the value of the degree of freedom f...

Q: For a binomial experiment with 20 trials P(x 16). false O true

A:

Q: from Silva and Tenreyro (2017), plots the total fertility rate against real per capita income for 88...

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

Q: The correct formula for effect size using Cohen's d for a single-sample t test is:

A: We know that cohen's d measures the effect size. Here μ is population mean, M is sample mean, s is s...

Q: Find a value X0 of the random variable X that satisfies the following probability. P(X > X0)=0.025

A: here mean = 46 standard deviation = 5  

Q: Find out by interpolation from the following data the number of workers earning $24 or more but less...

A:

Q: The average defect rate on a 2010 Volkswagen vehicle was reported to be 1.39 defects per vehicle. Su...

A: Given Suppose that we inspect 100 Volkswagen vehicles at random. 

Q: Write the null and alternative hypotheses you would use to test each of the situations in parts (a) ...

A:

Q: According to the 2016 National Survey on Drug Use and Health, 6.5% of teenagers aged 12-17 used mari...

A:

Q: A stock market analyst examined the prospects of the shares of a large  number of corporations. When...

A: The conditional probability of happening of event A when event B already happened, can be expressed ...

Q: The data mentioned in the question can be expressed as PB=0.25, PW=0.25, PS=0.50, PGB=0.40, PGS=0.20...

A: Given, The data mentioned in the question can be expressed  as P(B)=0.25, P(W)=0.25, P(S)=0.50, P(G|...

Q: Suburb After Before Diff     Burr Oak 4 4 0     Elgin Corners 1 2 -1     Elm Grove 8 3 5     Greenbu...

A:

Q: A population has mean u = 19 and standard deviation o =4. Round the answers to two decimal places as...

A: Given information- Population Mean µ = 19 Standard deviation (σ) = 4 Z-score = -2.3 We have to find ...

Q: In a sample of 100 Planter's Mixed Nuts, 19 were found to be almonds. (a) Construct a 90 percent con...

A: Given n=100 X=19

Q: Durations of clinical research studies awarded by a particular federal agency are assumed to follow ...

A:

Q: Question 1 Consider a 3 dimensional contingency table. Decide if the following statements are true o...

A:

Q: Which of the following illustrates statistics in a singular sense? You may pick only one, both, or n...

A: Given that, two statements: Statistics on the number of confirmed COVID-19 positive cases show that...

Q: P(B) 0.25, P(A and B) = 0.1, find P(A) %3D P(A) = 0.3, P(A and B) = 0.075, find P(B)

A:

Q: Question 1. a) Consider an experiment which measures the value of three different vari- ables on a u...

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

Q: An integer is chosen at random from the first two lundred digits. What is the probability that the i...

A:

Q: To test the desirability of a certain modification in typists, desks, 9 typists were given two tests...

A:

Q: According to this simulation, what is the probability that at least one of the next five dogs he see...

A: here given a simulation result total outcomes in result  = 20 and  let 5 and 6 represents the german...

Q: 4. x 125, µ= 105, o=8, z = ? z 1.11, u= 145, o= 5. 20, x =?

A:

Q: Researchers conducted a study of smartphone use among adults. A cell phone company claimed that iPho...

A: . Find a 95% confidence interval for the difference in proportions between white and African America...

Q: Did male residents seem to be more or less aggressive (by displaying dominance behaviors) towards in...

A: From the given information, The investigator is specifically interested to test whether the male re...

Q: Your goal is to estimate a population proportion with a sample size n = 700 and the sample proportio...

A: Here check condition use z critical for confidence interval of population proportion 

Q: Suppose that the amount of time that students spend studying in the library in one sitting is normal...

A:

Q: If a smoker is selected at random, what is the probability that the individual has diabetes? What is...

A:

Q: A  researcher has a hypotheseis  that children who are "inclusive" classroom develop more empathyTes...

A: Given : Claim : children who are "inclusive" classroom develop more empathyTesr than those NOT inclu...

Q: Example 13-8. Show that if (B) = X, (BC) _ (CA) N (A) and AB) – = 2X, N = 3x N N y, (een then the va...

A:

Q: 7. Which of the following graph is the correct illustration of the notation P(Z b)? А. В. С. D.

A: Z be the standard normal variates  Then the notation :p(z<a)u p(z>b) ?

Q: Marks obtained by 9 students in statistics are given 52, 75, 40, 70, 43, 40, 65, 35, 48. Calculate t...

A:

Q: e proportion of eligible voters in the next election who will vote for the incumbent is assumed to b...

A:

Q: Explain briefly about Multiple Sampling Plan?

A:

Q: Activity 1 Identify the regions under the normal curve of the following standard normal values using...

A: Given that  We have z values  We have to find region under normal curve using given Z standard norma...

Q: Refer to the following scenario. A government official is in charge of allocating social programs th...

A:

Q: The purpose of the study conducted by Anim-Nyame et al. in 2011 was to examine the ascorbic acid lev...

A: Given information:   Brand A Brand B Brand C Reduced Vit C 10 3 7   5 7 3 Oxidised Vit C 7 ...

Q: 13. According to the 68%-95%-99.70% rule, the standard deviation and mean interval that covers appro...

A: Empirical rule states that, About 68% of data falls within one standard deviation of mean, about 95%...

Q: Directions: Write the probability distribution for each discrete random variable. 2. Construct the ...

A: The sample space for the sum of outcomes when two dice are rolled is given below: S=2, 3, 4, 5, 6, 7...

Q: Compute the p-value for this hypothesis test. Recall that = 112. Hint: Compute P(X < a) (at least as...

A: Given  x¯=112 and n=200  

Q: Write the null and alternative hypotheses you would use to test each of the situations in parts (a) ...

A:

Q: Application of The Central Limit Theorem for Sums 100 North Main Street is the tallest building in W...

A: a. Let the random variable X~N65, 3.5 μ=65σ2=3.5 Consider, E∑X=EX1+X2+....+X85                =EX1+E...

Q: In a random sample of 765 adults in the United States, 322 say they could not cover a $400 unexpecte...

A: a) Here population under consideration is adults in United States who cover $400 unexpected expense ...

Q: The weights of bags of baby carrots are normally​ distributed, with a mean of 29 ounces and a standa...

A:

Q: question(3): based on an article published  in the city of toronto the response time is  6  ,7  ,9...

A: The sample mean is as follows: The sample standard deviation is as follows: