A qutz consists of 20 muhple-choce questions, cach with 4 possible answers. For someone who makes random guesses for all of the answers, find the probabity of passing if the minimum passing grade e pae)

Q: A manufacturing firm finds that 80% of its new hires turn out to be good workers and 20% become poor…

A:

Q: A car enthusiast wants to determine if his car indeed travel 640 km on  a full tank of a particular…

A:

Q: False

A: Here the besting claim is  students on average spend more than 1 hour per homework assignment. So,…

Q: In a poker game, five cards are dealt at random from an ordinary deck of 52 playing cards. Find the…

A: Probability: The formula for probability of an event E is as follows:

Q: Suppose we roll two fair dice (a red die and a green die). Let A = "The sum of the two dice is less…

A:

Q: A popular theory is that presidential candidates have an advantage if they are taller than their…

A: (a) State the hypotheses.

Q: The volleyball coach of CPU claimed that the players could jump higher than the players of USA. The…

A: The given data is, CPU USA 16 15 18 10 14 13 19 14 18 11

Q: A bag contains one hundred red balls and also one hundred blue balls. A woman selects balls at…

A:

Q: What is the preimage of Y? y Y 2.

A:

Q: Consider two perceptrons defined by the threshold expression True or false? Perceptron A is more…

A: Consider the given threshold expression, ω0+ω1x1+ω2x2>0 Here we have given that the perception A…

Q: Two construction contracts are to be randomly given to one or more of three firms say I, II, III. A…

A: Given,  X = number of contracts were given to firm I Y = number of contracts were given to firm II

Q: of multicolored balls contains 3yellows, blue, U1 black 5pink balls.f 3 batls ace drawn from bag…

A: Given : No. of yellow balls = 3 No. of blue balls = 4 No. of black balls =1 No. of pink balls = 5 So…

Q: A survey was taken that asked 1880 randomly selected adults from Country A and Country B to agree or…

A: Number of Country A servey people = 934 Number of Country B servey people = 1880 - 934    = 946…

Q: Claim: Most adults would not erase all of their personal information online if they could. A…

A: In a survey of 621 adults showed that 38% of them would erase all of their personal information…

Q: 2,2 and write tte answers in the comepute form of atib s 2.

A: Since you have posted a question with multiple sub parts we will solve first three sub parts for…

Q: a certain test for a particular cancer is known to be 95% accurate. a person submits to the test an…

A:

Q: Explain each of the following terms using an example   a. Manova b. Anova   2. When conducting…

A: MANOVA and ANOVA

Q: Three Carcs chawn rom are Paek Sa కజ (ande that ll club Conds Find -The probabitity Dumbered on

A: Given, three cards are drawn from a pack of 52 cards. Now, n (cards are numbered or club cards) =40

Q: In a recent study, 25 males used a new weight-loss supplement, and  19 of them experienced weight…

A: Given information No of males uses a new weight-loss supplement = 25 No of them who experienced…

Q: ​Claim: Most adults would not erase all of their personal information online if they could. A…

A: Solution: a. Let X be the number of adults showed that they would erase all of their personal…

Q: 4 A school has 137 math students. a) Prove that if the principal hires 8 math teachers, then at…

A: According to the given information, Number of math students in school = 137 For part (a) it is…

Q: Has the principle of comparison been addressed in this experimental design? A company that…

A:

Q: milk store wants to know if the milk in the 1-gallon cartons actually averages 1-gallon. State null…

A: Given that  The manager of a milk store wants to know if the milk in the 1-gallon cartons actually…

Q: he error funct couibnpo 2ha : used in proba a) Show that

A: Given:-   erf(x)=2π∫0xe-t2 .dt

Q: A blind taste test is conducted to determine which of two​ colas, Brand A or Brand​ B, individuals…

A:

Q: A new warehouse is being designed and a decision concerning the number of loading docks is required.…

A: Binomial distribution : When every trial has a similar chance of achieving one specific worth, the…

Q: Suppose we roll two fair dice (a red die and a green die). Let A = "The sum of the two dice is less…

A: For a sum less than 5

Q: A library subscribes to two different weekly news magazines, each of which is supposed to arrive in…

A: Given, Let the events be: The corresponding probabilities are:

Q: Identify a nonparametric alternative to the one-wayANOVAprocedure.

A: Kruskal – Wallis test: Kruskal-Wallis test is a nonparametric test and it is alternative to the…

Q: 1 in a simple random sanpling if 50 people, find the prob that less than 38  perrcent of our sample…

A: Given : 40 %people are afraid of dogs , p = 0.4     1) in a simple random sampling if 50 people,…

Q: Explain the logic of a Kruskal–Wallis test.

A: Kruskal-Wallis test: The Kruskal-Wallis test is useful for comparing the means of the population…

Q: If more alged when making a particular shade of blue paint, the shade is unacceptable. Determine the…

A: From given data:  Variance =σ2=0.0160 and also, Standard deviation=σ2=0.0160=0.1264 level of…

Q: The null and alternative hypotheses divide all possibilities into two sets that intersect (overlap)…

A:

Q: With the same conditions as #3, what is the probablity that a randomly chosen student has a desktop,…

A: We have to use conditional probability here

Q: An inventory consists of a list of 115 items, each marked “available” or “unavailable.”  There are…

A: Consider the given information.

Q: a study is done to test the claim that Company A retains its workers longer than Company B. write…

A: It is given that the test is Company A retains its workers longer than Company B.

Q: 2 FIND THE PARAMTRIC AND SYMMETRI C EGUATIUNS OF THE LINE THAT PASSES THROUGH (2,8,10) AND く2,8,147…

A: The given data is: The line passes through 2,8,10 and parallels to 2,8,14 To find the parametric and…

Q: When every scorer can interpret the results of the same test and arrive at identical results, the…

A: The reliability of an object is known as a degree when the objects provide the same results over a…

Q: State the null & alternative hypothesis in mathematical notation.

A: Test is that whether eating fish makes one smarter.

Q: In two tailed test If -za/2 < z < Za/2, do not reject Ho.

A: We do not reject the null hypothesis(HO)If Z&lt;Zα/2 α, Then we do not reject the null hypothesisor…

Q: Suppose you roll 2 dice. What is the pobability that the sum of the 2 dice is exactly 4, given that…

A: When two dice are rolled the possible outcomes are       1,1 1,2 1,3 1,4 1,5 1,6       2,1…

Q: Due to COVID 19, the Purchase department of the company decided change the supplier of the material…

A: Given data is: Price in RO Number of items 00--10 3 10--20 8 20--30 10 30--40 11 40-50…

Q: A medical researcher says that less than 72% of adults in a certain country think that healthy…

A: In this case, the claim is that less than 72% of adults think that children should be required to be…

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

A: a. Denote p as the true proportion of the adults, who  would erase all of their personal information…

Q: It has been said in Seattle, Washington that at least 50% of the days are rainy.  A researcher…

A: Given that   It has been said in Seattle, Washington that at least 50% of the days are rainy..... We…

Q: pose that we want to estimate the true rate r of covid-positive people in a popu- lation (where they…

A: Given: P(covid positive) = r P(covid negative) = 1 - r P(2 heads ) = 0.25 So, P(reported +ve | C…

Q: A coin is tossed twice and comes up heads both times. Someone says, “There's something wrong with…

A: a. A coin is tossed twice and comes up heads both times and someone says “there’s something wrong…

Q: A research center claims that 30% of adults in a certain country would travel into space on a…

A: Given data sample size, n = 1200 population proportion,p= 0.3 Significance level,…