A population of values has a normal distribution with 58.5. You intend to draw a random u = 187.3 and o = sample of size n = 50. Find P77, which is the mean separating the bottom 77% means from the top 23% means. P77 (for sample means) = Enter your answers as numbers accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.

Q: The table below shows the number of state-registered automatic weapons and the murder rate for sever...

A:

Q: 37 A single die is rolled twice. The 36​ equally-likely outcomes are shown to the right.     Find th...

A: Given Information: A die is rolled twice, Total number of possible outcomes = 62=36 The event for tw...

Q: What is the value of a after running the following R code? a <- 1:5 a <- (3*sum (a)) + 1

A:

Q: (10) Find the indicated probability. As a prize for winning a contest, the contestant is blindfolded...

A: Solution: From the given information, the urn contains forty $1 bills and ten $100 bills. Total numb...

Q: Compute the sample mean and the sample standard deviation.

A: Given: Data: 1.3, 2.8, 2.3, 2.1, 1.5, 1.6, 2.3, 2.7, 2.5, 3.3 N=10 (a) Hypothesis: For cost estimati...

Q: A jar contains 6 red marbles numbered 1 to 6 and 12 blue marbles numbered 1 to 12. A marble is drawn...

A: Let R be the red marbles. P(R)=618=13 Let O be the odd-numbered marbles. There are 3 red odd numbere...

Q: Every cereal box has a gift inside, but you cannot tell from the outside what the gift is. The store...

A: From the information, the store manager assures you that 12 of the 45 boxes on the shelf have the se...

Q: Assume it was determined from a random sample of customers that the probability of buying cake is 40...

A: From the provided information, The probability of buying cake is 40% that is P (C) = 0.40 (C represe...

Q: Eyeglassomatic manufactures eyeglasses for different retailers.  They test to see how many defective...

A: The total number of defective lenses is sum of all defects n(s) = 5865+4613+1992+1838+1596+1546+1485...

Q: Determine the point estimate of the population mean and margin of error for the confidence interval....

A:  

Q: Show that: a. E(X2) is greater or equal to [ E(X)2] . Hint: Recall the definition of variance.

A: E(X) implies mean of X and E(X2) implies mean of X2. Variance measures how far a set of number is sp...

Q: Bighorn sheep are found in the mountainous western United States.  In the following data, x = the ag...

A: For the given data set as follows: And the given information: ∑iXi=15n=5

Q: The annual per capita consumption of bottled water was 33.5 gallons. Assume that the per capita cons...

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean ...

Q: Subjects for the next presidential election poll are contacted using telephone numbers in which the ...

A: Probability: Probability is a chance factor that occurs at every outcome of a random experiment. Pro...

Q: A lecturer at college wanted to know if he can predict student’s quiz results by asking them tocompl...

A: We perform regression using the step by step procedure using excel as below: Enter the data into ex...

Q: The Temperature change in a chemistry Experiment Was -2°C every 30 minutes. The initial temperatur...

A: Here, temperature changes in every 30 minutes. Then the number of temperature change that occurs in ...

Q: Given the data below: x̄ = 140, σ = 20, n = 12 A 95% confidence interval would be 140 ± _______(roun...

A: The 95% confidence interval is x±zσn                      where z=1.96 at 95% confidence level

Q: 19. Sketch a normal curve for the distribution. Label the x-axis values at one, two, and three stand...

A:

Q: (1) Assume the outcomes from an experiment with a trials conform to a Poisson distribution with lamb...

A: As given: The outcomes from an experiment with trials conform to a Poisson distribution with lambda...

Q: Every cereal box has a gift inside, but you cannot tell from the outside what the gift is. The store...

A: The number of boxes on the shelf have the secret decoder ring is 12.

Q: What is the odds ratio for a study with a logistic regression coefficient -0.2524?

A: As given, the logistic regression coefficient is  -0.2524. It is asked to find the odds ratio.   

Q: Mars. Inc., claims that 24% of its M&amp;M plain candies are blue. A sample of 100 M&amp;Ms is rando...

A: Let, X is the number of plain blue candies. Given: n=100, p=0.24

Q: According to Masterfoods, the company that manufactures M&amp;M’s, 12% of peanut M&amp;M’s are brown...

A: Given Information: According to Master foods, the company that manufactures M&amp;M’s, 12% of peanut...

Q: The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.88...

A: Given that, The amounts of nicotine in certain brand of cigarette are normally distributed with the ...

Q: Question 2 Five males with an​ X-linked genetic disorder have one child each. The random variable x ...

A: 1. A. Yes, the table shows a probability distribution.

Q: The useful life of an electrical component is exponentially distributed with a mean of 4,000hours.  ...

A:

Q: Hospitals like to have electricity provided when there is a blackout. Assume that the backup generat...

A: Given: Number of trials (n) = 2 Probability of success (p) = 0.38

Q: The operations manager of a musical instrument distributor feels that the demand for Bass Drums may ...

A: Given Information :  The operations manager of a musical instrument distributor feels that the deman...

Q: You have two groups of researchers getting data on a new drug for Alzheimer’s patients with working ...

A: SEM measures the precision of the population mean. The SEM is defined as  SEM=σn,where, σ=∑i=1nxi-xn...

Q: How do I find the mean of a data set?

A: Mean is sum of observations divided by number of observations in the data set. Formula is: mean=sum ...

Q: 24

A: Given Information: The number of hours worked and employee's wages. Correlation is a measure which i...

Q: A simple random sample of size n is drawn. The sample mean, x, is found to be 18.2, and the sample s...

A: Given: x=18.2,s=4.5,n=35,α=1-0.95=0.05  

Q: Given the following sampling distribution of one mean with a sample size 25, from a normally distrib...

A: From the graph, μx¯=60, and μx¯-σx¯=58 The value of σx¯ is,  μx¯-σx¯=58σx¯= μx¯-58=60-58=2

Q: (7) The given values are discrete (binomial outcomes). Use the continuity correction and describe th...

A: From the given information, The probability of less than 48. The given values are discrete. The cont...

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

A: The degree of freedom is, The level of significance is, The t-value such that the area in the righ...

Q: Just need part d

A: Solution: d. From the given information,

Q: True or false;  Hypothesis testing on samples with fewer than 30 participants can be carried out by ...

A: Z-test :  In a z-test, the sample is assumed to be normally distributed. A z-score is calculated wit...

Q: distributed population, find the population standard deviation, o. 49 52 55 58 61 64 46

A: Given that, From the sampling distribution, the central line is the mean value 55

Q: The Central Intelligence Agency (CIA) has specialists who analyze the frequencies of letters of the ...

A: Here it is given that ,  The Central Intelligence Agency (CIA) has specialists who analyze the frequ...

Q: In a large population, 55% of the people have been vaccinated. If 3 people are randomly selected, wh...

A: Let "X" be the people that have been vaccinated.

Q: At a drug rehab center 37% experience depression and 30% experience weight gain. 15% experience both...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: The ages of the patients of a pediatrician were surveyed, summarize and displayed in the box-and-whi...

A: If the difference between Q3 and Q2, Q1 and Q2 are equal, then the distribution is symmetric. If the...

Q: how to solve?

A: From the information, the regression equation is y^=-0.0578x+2.9232

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 2.8 years...

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Q: Let X be the temperature in °C at which a certain chemical reaction takes place, and let Y be the te...

A: Here X is the temperature in 0C , and let Y be a the temperature in 0F, thus Y=1.8X+32 a.) If the me...

Q: In a poll, 37% of the people polled answered yes to the question "Are you in favor of the death pena...

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Q: The ages of the winners of a cycling tournament are approximately bell-shaped. The mean age is 28.3 ...

A: (a) Obtain the standard z-score for the random variable X equals 23. The standard z-score for the ra...

Q: A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet C...

A: From the provided information, Mean (µ) = 8.4 hours Standard deviation (σ) = 1.8 hours Let X be a ra...

Q: Let's assume our class is truly representative of the population at large. (a) Calculate the probabi...

A: It is given that n = 10.

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.