The population standard deviation for the heights of dogs, in inches, in a city is 7.9 inches. If we want to be 95% confident that the sample mean is within 2 inches of the true population mean, what is the minimum sample size that can be taken? z0.10 z0.05 z0.04 z0.025 z0.01 z0.005 1.282 1.645 1.751 1.960 2.326 2.576 Use the table above for the z-score, and be sure to round up to the nearest integer

Q: Washington High wants to estimate the number of seniors who plan to go to a 4-year college. Answer…

A:

Q: Given the joint density function below, find P(1 <Y<5 | X= 1). 6-x-y 8 f(x,y)= 0<x<2, 2<y<6…

A: Given the joint density function for the random variable X and Y as

Q: The makers of a soft drink want to identify the average age of its consumers. A sample of 52…

A: Given that, mean (M) = 23 years, SD (s) = 5 years and sample size (n) = 52

Q: If an omitted regressor is not correlated with the included variables, then the following OLS…

A: Omitted variable bias is a common issue that can arise in regression analysis, particularly in…

Q: The following are salaries for a business manager position in California.  We will use this data to…

A: The given salary values (in $) are as follows:80000, 80000, 80200, 10000, 92000, 84000, 105000,…

Q: a. n=2 ∑ni=1xi=20. The mean is b. n=4 ∑ni=1xi=80 The mean is

A: It is given that,Part a) Part b) To find the mean value in both cases.

Q: • Conducting a post hoc test is similar to conducting multiple t-tests. As a result, it would seem…

A: ANOVA is the generalization of the t-tests. We use the t-tests for checking the significant…

Q: observed t value is 3.32 and the critical t value is 1.812, then that means.

A: If the observed t value is 3.32 and the critical t value is 1.812

Q: The probability is (Round to four decimal places as needed)

A: Let  be the no. of delegates arriving by mode i. be the probability of a delegate arriving by mode…

Q: 3 Central Limit Theorem Define r a random variable with E[x] = µμ <∞, V[x] = ² <. The Central Limit…

A: As per guidelines of Bartleby,we are giving here solution of first 3 parts only.

Q: 1.1-6. If P(A) = 0.5, P(B) = 0.6, and P(A n B) = 0.4, find (a) P(A U B), (b) P(A n B'), c) P(A' U…

A: P(A)=0.5, P(B)=0.6, P(A ∩ B)=0.4

Q: 6.15. Control charts for x and R are to be established to control the tensile strength of a metal…

A: Given that the tensile strength is normally distributed. Thirty samples of size, parts are…

Q: (a) If per capita GDP rises by $1,000, by how much does the % of GDP spent on health change? (b) If…

A: Cosnider the given output:

Q: we know that the U.S popullation is just over 300 million. Each year about 4 million babies are born…

A: U.S population is just over 300 million.Each year about 4 million babies are born in the U.S. and…

Q: Given a binomial distribution with n=4 and TT= .25. Determine the probabilities of the following…

A:

Q: What is the sampling frame? Why is sampling important?

A: The provided information is as follows:The given question is related to the sampling frame and the…

Q: Consider the following regression model Y=B+B₁₂X₁+B₂X₂+u 1 1 0 22 where E[u | X₁, X₂]=0. Suppose X₁…

A: Given that Y=β0+β1x1+β2x2+u E(u/X1,X2)=0X1  and X2 are highly correlatedWe have to choose correct…

Q: When purchasing bulk orders of batteries, a toy manufacturer uses this acceptance sampling plan:…

A: The question is about discrete probability distribution.Given :No. of batteries in a shipment ( N )…

Q: 21.Uber owner receives many complaints per day about the behaviour of its drivers. Over a 9 day…

A: The following number of calls from irate passengers: 3,0,8,9,6,7,4,9,8 for a total of 54 complaints.

Q: The heights of adult men in America are normally distributed, with a mean of 69.3 inches and a…

A: MenPopulation mean, Population standard deviation, WomenPopulation mean, Population standard…

Q: Given the data (1,2), (3,6) and (5,14). Use the method of least squares to calculate the estimated…

A: Data : { (1,2) , (3,6) , (5,14) } According to least squares method, We have to calculate regression…

Q: a. Is this a frequency histogram or a relative frequency histogram? Relative frequency histogram…

A: The hist. of the data is given below.From the histogram the table can be formed…

Q: A combination lock uses 3 numbers, each of which can be from 0 to 26.   a] If there are no…

A: A combination lock has 3 numbers and each of which can be from 0 to 26.

Q: Anna warted to test the effect of a popular energy drink an alertness. To do this, she recruited 12…

A: Given the data of alertness scores of energy drink and soft drink asEnergy DrinkSoft…

Q: Information about a sample is given. Assume that the sampling distribution is symmetric and…

A: r=0.33 se=0.05

Q: If the observed t value is 3.32 and the critical t value is 1.812, then that means.

A: If the observed t value is 3.32 and the critical t value is 1.812

Q: A TV originally priced at $799 is on sale for 30% off. There is then a 9.2% sales tax. Find the…

A: A TV originally priced at $799 is on sale for 30% off. There is then a 9.2% sales tax.  the price…

Q: The regression equation y-3.648-1. 182 approximates the cost to go on a safari, y, given the number…

A: Regression equationy=3.648∗1.182x

Q: Consider the following frequency table representing the distribution of hours students spend on the…

A: Given frequency distribution table is,Using formula,

Q: Given the above forecast and demand information in Question 7, what is the value of Theil's…

A: Consider the given dataset: DemandForecastErrorAbsolute ErrorSquared ErrorAbsolute Percent…

Q: The military has two different programs for training aircraft personnel. A government regulatory…

A: The sample mean, sample sizes, and population standard deviations are:…

Q: A study was conducted to determine how people get jobs. The table lists data from 400 randomly…

A: Given:

Q: Consider the data set. 2, 3, 4, 5, 7 (a) Find the range.   (b) Use the defining formula to compute…

A: Given:The data values are as follow:2, 3, 4 5, 7

Q: Save & Exit Practice Lesson: 3.1 Frequency Distributions Question 8 of 10, Step 1 of 1 2/10 Correct…

A: Types of complaint Frequency Not cold enough 36Water dispenser not working6Ice maker not working…

Q: identify themselves as procrastinators. Does this evidence support the professor’s claim that fewer…

A: n=118,X=102,p=91%=0.91α=0.01

Q: Listed are 32 ages for Academy Award winning best actors in order from smallest to largest. (Round…

A:

Q: Supose we know that the U.S popullation is just over 300 million. Each year about 4 million babies…

A: US population = 300 million 4 million babies are born in US2.8 million  Americans die each year1 in…

Q: Suppose that as part of a research methods class, Bailey was asked to write summaries of research…

A: Suppose that as part of a research methods class, Bailey was asked to write summaries of research…

Q: In a survey conducted by the Gallup organization on September 6-9, 2012, 1,017 adults were asked "In…

A: From the given data ( 1 ) Frequency table Confidence LevelFrequencyGreat deal81Fair amount325Not…

Q: Answer the following question, keeping in mind that your answer must be a number between 0 and 1,…

A: Normal distribution

Q: Find the "mean" of the given probability distribution. X 0246 P(x) .05 .17 43.35 3.10 3.75 4.76 4.16

A: XP(X)00.0520.1740.4360.35

Q: The table below contains three estimated regressions, which were computed in 2007 using data on…

A: Given the coefficient of the regressor variable is                      and standard error…

Q: Find the "mean" of the given probability distribution. X 0 2 4 6 p(x) .05 .17 .43 .35 3.10 3.75 4.76…

A: The discrete probability distribution is given as : xp(x)00.0520.1740.4360.35

Q: K Some ends pay a total of $23 for a pizza. Each of the n friends pays an equal share of the cost…

A: Given that total cost for pizza (C) = 23 dollarsLet "n" denote number of friends who pay equal share…

Q: An American Society of Investors survey found 30% of individual investors have used a discount…

A: Given:30% of individuals investors have used a discount broker that is p = 0.30n = 9X~B (9, 0.30)

Q: For making a scatter plot of the data set, which would be the best scale and interval for the axis…

A: We have given data set: Water (L)10.50.821.50.52.5Fluoride (mg)0.40.40.61.60.80.21.8

Q: Use the following information to answer the next two exercises. The percent of licensed U.S. drivers…

A: The contengency table shows the gender and age groups.

Q: In a survey of 2973 adults, 1475 say they have started paying bills online in the last year.…

A: Given:Sample size (n) = 2973 adultsOut of which 1475 say they have started paying bills online last…

Q: line squares I will always pass Show that the least Y = B₁ + B₁²³ Bx through the time point (5,5).

A: The given least square line is y=β^0+β^1x.The objective is to show, the line of y=β^0+β^1x passes…

Q: Consider the following data set. 1 -2 -10 1 2 y-3.7 0.3 3 4.5 10.4 1. Find the best fitting curve of…

A: