A simplé random sample of size n=81 is obtained from a population with u= 84 and o=9. %3D (a) Describe the sampling distribution of x. (b) What is P (x>85.65)? (c) What is P (xs81.5)? (d) What is P (82.65

Q: r=0.665 alculate the coefficient of determination. Round to three decimal places as needed.)

A: We have given that,  Correlation coefficient (r) = 0.665 Then,  We will find the coefficient of…

Q: 4, The hardness of ten steel samples was measured and the results were as follows. 1 2 8. Sample…

A:

Q: Data on pull-off force for connectors are as follows: 79.3, 75.1, 78.2, 74.1, 73.9, 75.0, 77.6,…

A: The random variable X follows normal distribution. We have to find the standard error of the point…

Q: Use Bayes' theorem or a tree diagram to calculate the indicated probability. Round your answer to…

A: From the provided information,

Q: X: 13. Internet and Nobel Laureates Listed below are numbers of Internet users per 100 people and…

A: The objective is to test for correlation between two variables. Correlation indicates the…

Q: We want to conduct a hypothesis test of the claim that the population mean daily profit of a…

A: Given that  Claim : The population mean daily profit of a convenience store is less than 572…

Q: The heart rates of 20 patients in am icu have mean 95.3 beats/min standard deviation 16.9 beats/min…

A:

Q: et expected return and standard deviation of a risky portfolio are 10% and 18% respectively.…

A:

Q: 5

A:

Q: Practice with the t distribution. An independent random sample is selected from an ap- proximately…

A: Given the formula for confidence interval of t distribution.  We have to find the critical value C…

Q: OIn a random sample of visitors to a famous tourist attraction, American tourists and 312 of 500…

A: We have given that,  X1 = 252, n1 = 750 And X2 = 312, n2 = 500 Then,  We will find the 96%…

Q: Let X be the number of people being dropped off from the shuttle that the students observe. The…

A: From the provided information, x P (X = x) 1 0.12 2   3 0.18 4 0.26…

Q: Make a hypothesis test on two population means or proportions for variables X and Y are satisfied.…

A:

Q: A researcher is interested in finding a 95% confidence interval for the mean number of times per day…

A: The sample size is 113.

Q: You'd like to test the null hypothesis that the means of the two samples (column A and column B) are…

A: Null Hypothesis: H0: The means of the two samples (column A and column B) are the same. Alternative…

Q: Use the eigen value technique to find the limiting probability as n →∞ ГО.2 0.3 0.5 0.4 0.6 0.1 0.1…

A:

Q: 2. Determine if there is relationship between the age of person in years and their weight in kg…

A:

Q: A human resources representative claims that the proportion of employees earning more than $50,000…

A:

Q: Alumni Contributions The director of an alumni association for a small college wants to determine…

A: The independent variable is Years. The dependent variable is Contribution. We have to find the…

Q: ou are to roll a fair die n=108  times, each time observing the number of dots appearing on the top…

A: It is given that n=108.

Q: Question 14 Provide an appropriate response. In a random sample of 26 laptop computers, the mean…

A: Given information: n = 26 μ=$150, σ=$35

Q: Population variances o and o, are known. Question: Two kinds of thread are being compared for…

A:

Q: a. What is the shortest time spent sleeping that would still place a resident in the top 5% of…

A: here given  mean = 6.1 hour standard deviation = 1 hour here use excel command for z -score  x=…

Q: In the formula for an analysis of variance, we want between-group variance to be and within group…

A:

Q: 1. For the sample data Scatter Plot 10 9 8 7 4. 3 1 1 5 7 8. 1 3 5 8 y 2 4 6 a. Based on the scatter…

A: a. Scatterplot is a graphical representation between two variables, where each of the points of the…

Q: Tictok D. Determine the values of the random variables in each of the following distributions. 1.…

A: Given some problems, we have to find the values of random variables and also find the probability in…

Q: Q 20: year mile hour 2001 4000 200 2002 4400 220 2003 2000 100 2004 3000 120 2005 4800 240 2006 5200…

A:

Q: 8. Patterns and Games: Logic and Strategy Game In a two player strategy game, players take turns…

A:

Q: schizopherina , who stayed in the hospital the longest would score the lowest on a mental…

A: Given that ; X represent the Years of Hospitalization Y represents the Mental orienation.  By using…

Q: 3. For a certain type of computers, the length of time bewteen charges of the battery is normally…

A: Given that mu = 50 ,s.d =15 p ( 50 <x<70 ) = ?

Q: A graduate student conducted an experiment in which 24 ten-month-old babies were asked to watch a…

A:

Q: Determine the margin of error for a confidence interval to estimate the population proportion for…

A:

Q: In a certain computer card game, the player is awarded 5 points for each card that is moved to a…

A: Consider three random variables X1, X2, where, X1 have mean µ1 and variance σ12, X2 have mean µ2 and…

Q: In a study of vehicle ownership, it has been found that 30% of U.S. households do not own a vehicle,…

A: The level of significance is 0.10.

Q: The measurements of the drying time, in hours, of a certain brand of latex paint follow a normal…

A: We have given that the measurements of the drying time(in hours) follow normal distribution with a…

Q: Use the accompanying paired data consisting of registered boats (tens of thousands) and manatee…

A:

Q: Cor Salon provides haircut and facial cleansing, 40% of customers are older men and 007% of…

A: Given information: P(older men)=40%=0.40 P(younger men)=60%=0.60 P(facial cleansing| older…

Q: local church parish wants to raise money to add to their campus. In a sample from a previous fund…

A:

Q: Jim  is designing stripes with five parallel colors on a piece of cloth. How many stripes can jim…

A: Given information: Jim  is designing stripes with five parallel colours on a piece of cloth. Number…

Q: The inventory manager at a warehouse distributor wants to predict inventory cost (Cost in $) based…

A: The regression model is useful in forecasting.

Q: Below is a number-based particle size distribution for a powder mixture. Calculate mean, mode and…

A: For a set of n observations, x1, x2, ... , xn with frequencies f1, f2, … , fn, mean is given by,…

Q: The following ACF plot indicates that the series is stationary. Is True or False?

A: A time series is said to be stationary if it has constant mean, variance and the covariance is…

Q: is to be chosen at random to recommend a new company president. What is the probability 7. A board…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: 4. A distribution of the scores of a group of students who took a Mathemat shown helow. Determine…

A: Given frequency table: Class Frequency (f) 75 - 79 2 70 - 74 5 65 - 69 8 60 - 64 15 55…

Q: 3. Osman plants 50 bean seeds and observes how many days it takes for each to germinate. He records…

A: Qualitative data: The data which cannot be expressed as numerically is called qualitative data.…

Q: Suppose that X is a stochastic process with dynamics dXt = µdt +σdWt , where W is a P-Brownian…

A:

Q: You take your family on a wonderful, relaxing vacation to the beach.  About 15 minutes after you’ve…

A:

Q: Population variances values are unknown but we know that they are equal (o = 0;). Question: A taxi…

A: We have given that,  For brand A :- x̄1 = 36300, s1 = 5000 and n1 = 12 For brand B:- x̄2 = 38100, s2…

Q: Assume a student received the following grades for the semester: History. B: Statistics, A: Spanish,…

A: The given that the student received B grade for history , A grade for statistics , C grade for…

Q: 2. A radar unit is used to measure speeds of cars on a motorway. The speeds are normally distributed…

A: