Forty adults used the Atkins weight loss program. After 12 months, their mean weight loss was found to be 2.1 lb with a standard deviation of 4.8 lb. Construct a 90% confidence interval estimate of mean weight loss.  Use (   ) and one decimal place.

Q: he amount of trash generated by US households (in lbs per day) is Normally distributed. You a random…

A: given datanormal distribution n=8DF= n-1=8-1=7x¯=10.00 LBSs=5   LBSCI=0.90α=1-0.90=0.10

Q: 5.6 As s part of his thesis, Adam needs an estimate of the proportion of full-time undergraduate…

A: From the provided information, Confidence level = 90% Margin of error = 0.025

Q: ege claims that the proportion, p, of students who commute more than fifteen miles to school is less…

A: Given that  Sample size n =265 Favorable cases x =36 Sample proportion p^=x/n  =36/265 =0.1358…

Q: You are asked to select a password that consists of 5 characters. Each of the characters can be any…

A: It is given that a password consists of 5 characters, each characters can be any of the capital…

Q: 2. The joint probability function of two discrete random variables X and Y is given by ² + y²…

A:

Q: The following table provides data on the number of teachers according to the time devoted to public…

A: Given that    Professors Lectures Tutors Total  A good deal 25 13 9 47…

Q: A student researcher from the College of Education of the University of Pangasinan is making an…

A: Class website Class vlogs & wikis College 28 22 50 Engineering 18 32 50 Business…

Q: Professional tennis player Novak Djokovic hits the ball extremely hard. His first-serve speeds can…

A: M=Mean=112, sd=standard deviations=5

Q: In a study of the accuracy of fast food​ drive-through orders, Restaurant A had 302 accurate orders…

A: Given,x=65n=302 Confidence Level =95%

Q: 15. The inside diameter of a randomly selected piston ring is a random variable with mean value 12…

A: Given data mean value=12cm standard deviation=0.04cm

Q: A group of students were timed in their efforts to complete an F1 concession task for a certain…

A: Data from stem and leaf plot : 41,45,46,47,48,49,50,51,52,54,55,56,58,58,60,63,63,65,67,80 N=20…

Q: Suppose that we randomly select 50 billing statements from each of the computer databases of the…

A: Given that:   Hotel A Hotel B Hotel C Sample Average 155 180 115 Sample standard deviation…

Q: MPG Frequency 19 2 OA. The mean is approximately oreign cars is given in the following frequency…

A: Data given X Frequency 19 2 20 5 21 2 22 7 23 4 24 7 25 8 26 8 27 3 28 5 29…

Q: (a) F'(x): arctan x, -8 T I (b) F(x)=0 if x <0, 1-e-x/ if x ≥ 0; 0≥0. x² 2 (c) F(x) = 0, if x < 0,…

A:

Q: ONE STUDENT IS PICKED AT RANDOM, FIND: (A) P(A) (B) P(M) (C) P(A/H) (D) P(H/S) (E)

A: The general formula to calculate the probability of event A is  P(event A) = Number of favorable…

Q: Professional tennis player Novak Djokovic hits the ball extremely hard. His first-serve speeds can…

A:

Q: Let x be a continuous random variable that follows a distribution skewed to the left with μ = 86 and…

A: Solution-: Given: μ=86,σ=15,n=69 We want to find  (a) P(x¯&lt;83.9)=? (b) P(x¯&gt;87.9)=?

Q: 26. Packaging Error Because of a mistake in packaging, a case of 12 bottles of red wine contained…

A:

Q: Briefly define each of the following: a. Distribution of sample means b. Central limit theorem c.…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted....…

Q: Assume that all​ grade-point averages are to be standardized on a scale between 0 and 6. How many​…

A: The standard deviation is 1.5 and confidence level is 95%.

Q: A population proportion is to be estimated from a sample of 144 with a sample proportion of 0.5.…

A: given data  n = 144 p^ =0.5 95% ci ; E = ?

Q: Here are summary statistics for randomly selected weights of newborn​ girls: n=232​, x=32.3 ​hg,…

A: Given, Sample Size(n)=232 Sample Mean=32.3 Standard Deviation=6.5 Confidence Level=90%…

Q: Suppose 144 independent random t values that represent the waiting time until an event happens are…

A:

Q: In a particular hospital, 6 newborn babies were delivered yesterday. Here are their weights (in…

A: standard deviation σ2 =   Σ(xi - μ)2n

Q: 9 frot quartile s 5 Third Quartile Q3 Variace Sq

A: Given the frequency distribution to find the first and third quartile and variance.

Q: 3. Given the following set of repeated observations (Table 1) calculate: a. The mean value b. The…

A: Given data is 12.113,12.114,12.112,12.112,22.111,12.113,12.111,12.114,12.113,12.110sample size(n)=10

Q: Among the most exciting aspects of a university professor's life are the departmental meetings where…

A: Suppose that µ is the population mean number of hours spent at department meetings by all…

Q: You invest $200 000 in a project.  Your returns are as follows: Year        Annual Net Cash…

A:

Q: 1. The amount of time a train is late is Uniformly Distributed with a minimum of 2 minutes and a…

A:

Q: The average time spent on a homework assignment is 80 minutes with a standard deviation of 18…

A:

Q: The mean SAT score in mathematics is 528. The standard deviation of these scores is 48. A special…

A: Given that  Sample size n =90 Sample mean =532 Population standard deviation =48 NOTE:- According to…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 24 for the population…

A:

Q: Question 5 Consider a Uniform distribution U(14, 33) Compute the value of its Probability Density…

A:

Q: The results of a national survey showed that on average, adults sleep 7.3 hours per night. Suppose…

A: Given that  Mean = M = 7.3 , Standard deviation = SD = 2

Q: A college claims that the proportion, p, of students who commute more than fifteen miles to school…

A: claim : p&lt;0.15n = 265x = 36α = 0.10

Q: Fill in the P (X=x) values to give a legitimate probability distribution for the discrete random…

A:

Q: increase is what percent of the original number? (This is ge.) t in decimal form with three decimal…

A:

Q: Using a standard normal distribution, find c, given the following probabilities. Round your answers…

A: we have to find value of c  standard normal distribution Z~N(0,1)

Q: a. Interpret the meaning of the Y-intercept, bo Interpret the meaning of the slope, b1

A: Given straight line equation isYi^=16-0.4Xi

Q: Ith a mean of $145 and a standard deviation of $30. Let x be the mean amount of electricity bills…

A: Given that  Sample size n =24 Population mean =145 Population standard deviation =30

Q: 1. At Abraham Lincoln High School an achievement test is used for college placement. Counselors…

A: 1. It is given that the test scores are normally distributed.

Q: 4. A fast-food chain has many hundreds of franchises nationwide. Ideally, each franchise would…

A:

Q: 1 2 Sample Size Sample Mean 2.4 3.1 Sample Variance 1.44 2.74 100 100 Find a 90% confidence interval…

A:

Q: What is the z-score of x = 9, if it is 1.5 standard deviations to the left of the mean? Hint: the…

A: given data  x=9 is a.5 standard deviation to the left of mean. x = μ - 1.5σ z = ?

Q: 5. The following is a series of real annual sales (in millions of pesos) over an 8-year period of an…

A: Given that We have to find the scatter plot

Q: A sales representative for a publishing company recorded the following numbers of client contacts…

A: Here the number of observations N = 36 Here rule 1 is not given in the question. Therefore, choosing…

Q: The annual cost of preschool in Camarillo is assumed to be normally distributed with a mean of…

A:

Q: Assume that females have pulse rates that are normally distributed with a mean of μ=74.0 beats per…

A: given data normal distributionμ = 74σ = 12.5

Q: A house building company has developed a fast-growi full height in five years. Experiments show that…

A: 6.1 Given that the percentage of seedlings survive is 30%. p=P(survive)=0.30 There are 20 trees. Let…

Q: A researcher is comparing two multiple-choice tests with different conditions. In * the first test,…

A: Introduction: It is required to identify which of the two tests- regular test or randomized test-…