In one region, the September energy consumption single-family found to be normally distributed with a mean of 1050 kWh and a standard deviation of 218 kWh. Find P45, which is the levels for homes are consumption level separating the bottom 45% from the top 55%. (Round your answer to one decimal place)

Q: Description: Researchers at Kaiser Permanente want to test whether the mean baseline BMI for the…

A: To determine the minimum number of subjects needed to enroll for a study to have 90% power to reject…

Q: Scenario: Suppose a financial institution holds a well diversified $35,500,000 position in stocks.…

A: In this question, we are given a financial institution's diversified position in stocks, the…

Q: Three percent of the students at Lincoln High are in orchestra, 5% are in band, and 1% are in both.…

A: It is given that P( orchestra ) = 3% = 0.03P( band ) = 5% = 0.05P( orchestra and band ) = 1% = 0.01

Q: Sara and Mark are students at IBS graduated from different majors as follow: -          Sara has…

A: Given that: Sara has graduated with a Finance diploma with an average of 68, where the averages of…

Q: Question 3: The question concerns polling in the context of a constitutional referendum, in…

A: n = 1742Confidence level = 99%Overestimation(%)…

Q: Find the range for the following sample data. X: 20 O 12 09 06 05 23 20 15 35 26

A: data : 23,20,15,35,26we have to find range of data set.

Q: While constructing a frequency table for a variable, you notice that the relative frequencies for…

A: relative frequencies for each of the variable values are approximately the same

Q: An epidemic process is such that an infected individual is infectious for a time period which is…

A: Here, given that the epidemic process is such that an individual is infectious for a time period…

Q: uppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 56…

A: Answer Mean =56Standard deviation =3.2

Q: The accompanying table lists the ages of acting award winners matched by the years in which the…

A: Let, X denotes the best actress and Y denotes best actorThe data for x and y is given…

Q: Suppose you have six Virginia quarters and four Pennsylvania quarters in your wallet. You randomly…

A: From the provided information,We have six Virginia quarters and four Pennsylvania quarters in your…

Q: A poll of 2,188 randomly selected adults showed that 90% of them own cell phones. The technology…

A:

Q: Consider the following two statements about adding independent variables into a regression model: 1.…

A: Bias is not always reduced by increasing the number of independent variables in the model: When we…

Q: Suppose you want to estimate the effect of access to public transportation on house prices. You…

A:

Q: To test whether the mean time needed to mix a batch of material is the same for machines produced by…

A: (a)There is no evidence to conclude that population mean times for mixing a batch of material differ…

Q: In a recent awards ceremony the age of the winner for the best actor award was 34 and the age of the…

A:

Q: On the midnight shift, the number of patients with head trauma in an emergency room has the…

A: A probability distribution's Mean depicts the distribution's central tendency. The weights used to…

Q: Your -2 regression of 46 observations and 5 regressors shows a R = 0.29. What is the value of R²?…

A: The total number of observations is n = 46 and the number of regressors is k = 5.

Q: group of people was asked to think of a recent purchase, and to answer questions about how satisfied…

A: To determine the proportion of sample means with n = 16 that will have a mean greater than M = 7, we…

Q: We determined the sum of the squared deviations to be Σ(x − x)2 = 21,912.1, and there are n = 10…

A: The sum of the squared deviations is=21912.1n=10

Q: In how many different orders can you line up 8 cards on a table? a 8 Ob 1 Ос d 1,680 40,320

A: It is given that The total number of cards = 8

Q: hat the following data are taken from a study conducted by the National Park System, of which Death…

A: We have given data are 146,151,169,174,194,178,183,194,178,178,169,164,151,142

Q: X is a normally distributed variable with mean μ = 30 and standard deviation σ = 7. Find P(x < 33)

A: X~N(30,7)Mean()=30standard deviation()=7

Q: Susan takes a test and calculates her z-score on the test. She obtained a z-score of 1.22. Assuming…

A: Susan obtained z-score of 1.22 we have to find the percentage of individuals a test score higher…

Q: The sport of Professional Bull Riders (PBR) is a world-wide phenomenon where riders mount a bull…

A: The provided observations for the average buckoff time are: 45.51, 44.09, 42.67, 44.7, 45.13.The…

Q: 8 The data represent the ordered marks scored Interview: 3, 4, 2x, 5, by to applicants In an (x+4),…

A: A statistical measure that separates the higher half from the lower half of the dataset when…

Q: Adata set comparing a woman's shoe sire to her height is represented by the tale Shoe Size Height…

A: The dataset comparing a woman's shoe size to her height is provided below. Shoe…

Q: Express the confidence interval (0.052,0.120) in the form of p-E<p<p+E. <p<(Type integers or…

A: The confidence interval is (0.052 , 0.120)Lower confidence limit (LCL)=0.052Upper confidence limit…

Q: Based on the following values: Mathematical expectation: E(X) = ∑Xn1 = 1204 = 30 E(Y) = ∑Yn2 =…

A:

Q: The test statistic of z= 1.48 is obtained when testing the claim that p > 0.2. a. Identify the…

A: The question is about hypo. testingGiven :Claim : p &gt; 0.2Test stat : z  = 1.48Level of signif. (…

Q: Is the boxplot skewed and does it have any outliers

A: Box plot : Box plot consist 5 number summary : { Minimum,Q1,Q2,Q3, Maximum } GenerallyOutliers…

Q: For most healthy adult women and men, resting heart rates range from 60 to 100 beats per minute. The…

A: The size of each class interval in a frequency distribution is termed 'class width'. It depicts the…

Q: Assume that a sample is used to estimate a population proportion p. Find the 99% confidence interval…

A: To find the 99% confidence interval for a sample proportion, we can use the formula:CI = p̂ ± z *…

Q: A password for a website must have 4 different digits. How many unique passwords are possible if…

A: The no. of available digits to form passwords are 0,1, 2, 3, 4, 5, 6, 7, 8, and 9.The no. of digits…

Q: For most healthy adult women and men, resting heart rates range from 60 to 100 beats per minute. The…

A: The heart rate for 20 adult women is given.

Q: A teacher would like to determine if quiz scores improve after completion of a worksheet. The…

A: Null Hypothesis Alternative Hypothesis (claim)Significance level Sample data:…

Q: The mean value of land and buildings per acre from a sample of farms is $1500, with a standard…

A: Answer:- Given data values are, 1488, 2394, 1242, 418, 1085, 1906Using formula, Unusual values are…

Q: 12. Critical Thinking Consider the following types of data that were obtained from a random sample…

A: The three types of data are given.

Q: A fifth grader takes a standardized achievement test (mean = 125, standard deviation = 15) and…

A: Mean()=125standard deviation()=15Scores=148

Q: In a random survey of 500 doctors that practice specialized medicine, 20% felt that health care…

A: Data for sample 1 of specialized medicine doctors,The sample size The sample proportion Data for…

Q: What is the relationship between average annual household income, educational attainment, employment…

A:

Q: if X is a normal random variable with mean u = 3 and variance 62 = 16, find P(X >3), P(X>-1)

A: Mean=3, variance=16

Q: A newsgroup is interested in constructing a 90% confidence interval for the proportion of all…

A: sample size(n)=544x=442confidence level=90%

Q: 5. Basic Computation: Mean, Median, Mode Find the mean, median, and mode of the data set 8 27 26

A: 8,2,7,2,6

Q: Find the mean, median, and mode of the data, if possible. If any of these measures cannot be found…

A: Here given data in assending order is  12, 22, 35, 51, 54, 69, 84, 84, 112, 112Here,total number of…

Q: Assuming the population is roughly symmetric, construct a 95% confidence interval for the mean…

A: Let  be the population mean savings for a television to the doctor as opposed to an office…

Q: (b) Use the cumulative relative frequency plot constructed in part (a) to answer the following…

A: Commute TimeRelative frequency0 to &lt;50.05115 to &lt;100.181210 to &lt;150.197215 to…

Q: Five males with an X-linked genetic disorder have one child each. The random variable x is the…

A: xP(x)00.02910.15220.31930.31940.15250.029

Q: A certain drug is used to treat asthma. In a clinical trial of the drug, 25 of 260 treated subjects…

A: sample size(n)=260x=25significance level()=0.05sample proportion()=

Q: How to get points in the parameter from,p(-1.00<z<2.00)

A: Find the probabilityP(-1&lt;Z&lt;2)=?