The assembly time required for certain product is normally distributed with mean 31.2 minutes and standard deviation 4.6 minutes Find the Z score for a product item that required 39.5 minutes of assembly time. Use three decimals for your response.

Q: estion 2 ㄹ ording to GSMA real-time intelligence data, 61.22% of the world's population have a…

A: Given that  Population proportion p=0.6122 Sample size n =4

Q: In an effort to estimate the mean amount spent per customer for dinner at major New Orleans…

A: Solution-: Given: x¯=24.80,n=49,σ=5,c=0.90 We want to find the 90% confidence interval for the…

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 15

Q: spañol) A coin-operated coffee machine made by BIG Corporation was designed to discharge a mean of…

A: Given that Margin of error=E=0.06

Q: Find X3.975 for x² distribution with 13 degrees of freedom. X0.975 (Round the answer to 3 decimal…

A: The objective is to obtain the χ2 tabulated value for α=0.975, for the given degrees of freedom…

Q: Question 16 Find the 30-th percentile for the standard normal random variable Z. The 30-th…

A: Given that Z has follows standard normal distribution with mean zero and standard deviations one.…

Q: 2. On the wheel shown here, what is the probability of winning a big prize? 0A/0 А OB ²/ 618 ozud on…

A: From the given information we have Since wheel have 5 division therefore possible sample space are S…

Q: A task requires the completion of four activities. A teacher would like to know if differences in…

A: Given data: Sequence Allen Carla Henry A 22.4 20.8 21.5 B 17 19.4 20.7 C 19.2 20.2 21.2…

Q: 3. A researcher is comparing the effectiveness of two sets of instructions for assembling a child's…

A: The question is about hypo. testing Given :   To find : Is there a signif. diff. in time for two…

Q: What is the mean of this distribution?  What is the standard error of this distribution

A:

Q: A home pregnancy test was given to women, then pregnancy was verified through blood tests. The…

A: a)P(positive/pregnant)=n(positive and pregnant)/n(Pregnant)=80/89=0.8989     b)P(pregnant/positive)…

Q: An environmental group Oceana Canada analyzed 472 DNA samples of seafood purchased in four major…

A: Given that the laboratory results indicated 53% of the seafood samples were labeled correctly.

Q: 56. The explained contribution of Factors A, B, C, and D was statistically significant.

A: The statement to be tested is, "The explained contribution of factors A, B, C and D was…

Q: Chlorouorocarbons (CFCs) are used in air conditioners. However, CFCs damage the ozone layer, which…

A: From the given information, the survey of 650 vehicles was undertaken. Each vehicle is identified as…

Q: For a uniform random variable U~ U(9, 10), find the probability P(U > 10): P(U>10) (Round the answer…

A: Given that X~U(9,10) Pdf of X is  f(x)=1/(10-9)=1 , 9<X<10

Q: According to a survey, 10% of Americans are afraid to fly. Suppose 1100 Americans are sampled. a)…

A:

Q: . Comment on the shape of the distribution. 2. Use the empirical rule to state the percentage of…

A: If the mean is greater than the median, then the distribution is positively skewed. Also, if the…

Q: A researcher is studying wood volume production in forested areas. Wood volume data were collected…

A: The given data is Parcela 1 2 3 4 5 6 7 8 9 10 Area A 65 70 63 76 65 65 76 65 65 63 Area B 50…

Q: 3. Which class has a ratio of girls to total students of 7 : 10? O A. class with 3 boys and 7 girls…

A: Given that  We have to  Ratio of girls to total students of 7:10

Q: Assume that the average weight of an NFL player is 245.7 lbs with a standard deviation of 34.5 lbs.…

A: given data  normal distribution μ = 245.7σ = 34.7 n = 32 P(240<x¯<260) = ?

Q: Because of a mistake in​ packaging, a case of 16 bottles of wine contained 9of brand A and 7 of…

A: In this case, each of the bottles has the only option of being a bottle of "brand A" (defined as…

Q: When sampling from a population with mean μ and standard deviation σ, the sampling distribution of…

A: Given that  Population with mean μ and standard deviation σ

Q: 2. Using the following data set: 5, 7, 3, 9, 1 Find the mean and standard deviation of the data set…

A: The question is about z score Given : Data :    To find : 1 ) Mean and std. deviation of the data 2…

Q: Question 12 For the standard normal variable Z, find 20.82, the value that divides the area under…

A: We have to find the value of Z0.82

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 13.7…

A: Let X be the random variable from normal distribution with mean (μ) = 13.7 and standard deviation…

Q: Question 8 One of the reasons why the concept of an unfair coin is important in probability is that…

A: Here's given that probability of saving penalty is 0.21. And 4 attempts out of 7 kicks.

Q: do Federal Government Employee E-mail Use It has been reported that 81% of federal government…

A: Let p be the probability of government employees using email p=81%=0.81 , n=195

Q: According to the information that comes with a certain prescription drug, when taking this drug,…

A: Given ,  There is 21% chance of experiencing nausea (N).  i.e. P(N) = 21% = 0.21 There is a 40%…

Q: Question 9 et X be a continuous random variable such that 0.97= 3. Find P(X < 3): P(X < 3) = (Round…

A: Given  X0.97=3

Q: Question 2 Find to.80 for T distribution with 12 degrees of freedom. to.80 (Round the answer to 3…

A: Given data : Degree of freedom = 12 Confidence level = 0.80 To find: The t-critical value

Q: local

A:

Q: An accounting office has 6 incoming telephone lines. The probability distribution of the number of…

A: Given data is

Q: Question 1 For a normal variable X~ N(μ = 57.8, o = 4.1), find the probability P(X < 64.55): P(X <…

A: 1) Answer:- Given A normal variable X.  X ~ N( µ= 57.8, σ = 4.1)   Using formula,  Z-score= (X -…

Q: The county assessor is studying housing demand and is interested in developing a regression model to…

A: “Since you have posted multiple questions, we will provide the solution only to the first five…

Q: A researcher is studying a new treatment protocol to combat a certain disease. The interest is in…

A:

Q: Determine which approach of assigning probabilitise is the most appropriate.…

A: Given four different types of probability approach with examples.

Q: Question 7 How many license plates one can create using the LLDDDD-format in which I stands for any…

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

Q: Chlorouorocarbons (CFCs) are used in air conditioners. However, CFCs damage the ozone layer, which…

A: From the given information, the survey of 650 vehicles was undertaken. Each vehicle is identified as…

Q: Question 4 Assume that the probability of a randomly selected person getting in a car accident…

A: Here, given that probability of accident during the length of the insurance of the policy is 0.0014.…

Q: Question 7 According to a market research, the spendings of mall shoppers are normally distributed…

A: We have given that  Mean(µ) = 125.4Standard deviations (σ) = 23

Q: If 6 L of a solvent costs $77 per liter, then the value of the 6 L of solvent is

A: Answer:- Given,  Solvent cost per liter = $77  That is , 1 L solvent cost = $ 77  Using method, If 1…

Q: and find the probability that the weight of a randomly selected checked-in luggage is less than 61…

A:

Q: A bottled water distributor wants to determine whether the mean amount of water contained in…

A: Solution-: Given: μ0=1,σ=0.006,x¯=0.995,n=45,α=0.05 We want to find (a) Is there evidence that the…

Q: What critical value was used to compute this 95% confidence interval? Enter your answer rounded to…

A: The given confidence level is 95%.

Q: A group in favor of freezing production of nuclear weapons believes that the proportion of…

A: Here we have to identify the correct option from the given statment

Q: Question 5 Mandla measured the outcomes of throwing a cone 28 times. The results are provided in the…

A: given data  no. of sideways result  = 3 no. of upright results = 25 total no. of trials = 28…

Q: The registrar’s office at ACC predicts that 90% of the 6,950 spaces open in various math classes…

A: Given info: The registrar’s office at ACC predicts that 90% of the 6,950 spaces open in various math…

Q: If there are 700 test examples and the accuracy on them is 90%, with 80% confidence the upper bound…

A: given data, n=700p^=0.90CI=0.80upper bound of accuracy =?

Q: Question 2 For a binomial random variable X~ B(n = 81, p = 0.7), find the probability P(X < 62): P(X…

A: We have given,  n= 81 , p =  0.7 We have to find P(X&lt;62) ?

Q: Chlorouorocarbons (CFCs) are used in air conditioners. However, CFCs damage the ozone layer, which…

A: From the given information, the survey of 650 vehicles was undertaken. Each vehicle is identified as…