The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an average (mean) of 1.8 pounds with a standard deviation of 0.95 pounds. In a recent study, a group of 50 people who used this pill were interviewed. The study revealed that these people lost a mean of 1.9 pounds after one week. If the producer's claim is correct, what is the probability that the mean weight loss after one week on this pill for a random sample of 50 individuals will be 1.9 pounds or less? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.

Q: Which of the following is/are correct with regard to the short-run equilibrium of the firm under…

A: There are three MCQ  We have to choose correct options.

Q: About 6% of the population has a particular genetic mutation. 700 people are randomly selected. Find…

A: Given that  Probability of success p=0.06 ,q=1-p=0.94 Number of trials =700 X~binomial (n,p)

Q: According to USA Today, customers are not settling for automobiles straight off the production…

A: Given: Sample meanx¯=5000Sample size(n)=179Standard deviationσ=1500

Q: To help students improve their reading, a school district decides to implement a reading program. It…

A: The mean is 121.2 and standard deviation is 23.

Q: Burkina Faso, a landlocked country in West Africa, has the lowest adult literacy rate in the world…

A: Introduction: It is required to identify the suitable measure of central tendency for each variable…

Q: 6. In the Statistical Inference science, we: a. Make generalizations about the important aspects of…

A: Statistical Inference.  Statistical Inference is a science in which we try to estimate the parameter…

Q: Gabriella computes a 95% interval estimate of the mean performance of students in the MST class. She…

A: Solution: We will discuss about the margin of error for the 95% confidence interval and 99%…

Q: Section 9.2 # 68abc Weight loss: A doctor has developed a new diet to help people lose weight. A…

A: We have given the following  information.  Random sample = 500 Mean = 0.5 Standard deviation = 5

Q: An article in Medicine and Science in Sports and Exercise "Electrostimulation Training Effects on…

A: Given data issmple size(n)=30standard deviation(s)=0.09confidence level=90%

Q: Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to…

A: GivenP(1.17≤Z≤c)=0.1031

Q: A mandatory competency test for high school sophomores has a normal distribution with a mean of…

A: Suppose a random variable X, defines the scores in competency test for high school sophomores.

Q: Find the probability using the normal distribution:  P(−2.29<z<0)

A: standard normal distribution Z~N(0,1) μ= 0σ = 1 P(-2.29&lt;Z&lt;0) = ?

Q: Given the data set below, determine class Interval PII P78 19-21 22-24 25-27 28-30 31-33 Frequency…

A: Given data set:

Q: The boxplot below shows salaries for Actuaries and CPAS. CPA Actuary 20 30 40 50 60 70 80 90 100…

A: Chance Salary for CPA min= less than 30 Q1= 35 Q2= 55 Q3= 70 Max= 80 Russell's Salary for Actuary…

Q: A company deposits 2000 at the beginning of the first year and 200 at the beginning of each…

A:

Q: es (b-2) The coefficient of CompetingAds says that each additional $1,000 of "competitors'…

A:

Q: Suppose xx is a normally distributed random variable with μ=8.9μ=8.9 and σ=3.9σ=3.9. Find each of…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any questions so i am solving…

Q: A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many…

A: Given,Margin of error(E)=4Standard deviation(S)=10.7α=1-0.99=0.01α2=0.005Z0.005=2.576

Q: Betty, an employee of Shining Sun Daycare Center read an article in Healthy Child Magazine saying…

A:

Q: poll used a sample of 100 randomly selected car owners. Within the​ sample, the mean time of…

A: Given: Sample size n = 100 Sample mean X = 7.18 Standard deviation s = 3.37 Significance level α =…

Q: The mean score on a set of 23 tests is 76. Suppose two more students take the test and score 70 and…

A: given data n = 23 had mean of 76 . two more students take test and score 70 and 65. new mean  = ?

Q: Question 7 Suppose you have a fair dodecahedron dice (that means its 12 sided). The sides are…

A:

Q: Let the random variable X represent test 1 scores of the students who take a math class. Suppose…

A:

Q: Consider a Binomial Distribution of B(4,938, 0.654) Find the Standard Deviation for a probability…

A: GivenBinomial distribution of B(4938 , 0.654)

Q: The mean attention span for a ten-year-old in the USA is 19.10 minutes with a standard deviation of…

A: Given that Sample size (n)=25 Sample mean (x̄)=20.85 minutes   Sample standard deviation (s)=2.45…

Q: 2. The administration at a college wishes to estimate, the proportion of all its entering freshmen…

A: Given,population standard deviation(σ)=1.3Margin of error(E)=0.05α=1-0.95=0.05α2=0.025Z0.025=1.96

Q: Sandwich ata for the an McChicken Ⓒ Premium Grilled Chicken Classic Sandwich Premium Crispy Chicken…

A: We have given the following  data to find out Median and IQR 16,10,20,17,28,12,23,17,17,10,16,9,15,9

Q: Question 3 The production manager at Programmable Products wants you to test whether there is a…

A: Given Information: 6am-2pm shift 2pm-10pm shift 11pm-6am shift 15 18 9 20 21 29 18 22 35…

Q: The data below comprises of the number of hours (X) studied and the exam grade (Y) obtained for 6…

A: Given The data is as follows: X Y(%) 2 73 5 90 1 60 2 80 3 89 3 87

Q: Question 2. An engineer wants to determine how the weight of a car affects gas mileage. The…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 2. The VP for Academic Affairs of the University of Pangasinan wished to understand the distribution…

A:

Q: The security guard wants to file a report about the wearing of IDs of the students. He wants to…

A: In the given problem we have to the correct sampling method.

Q: Ho: H₁: Degrees of freedom: Rejection region: Test statistic: Decision: Conclusion:

A:

Q: Exercise 1: You own two surfboards, a blue one and a purple one. You surf everyday and the…

A: In this case, the events of interest are "using the blue surfboard" (i.e., defined as success) and…

Q: For Questions 11-13. The errors committed by the students when measuring a vertical pole using an…

A:

Q: How will you know by using the mean and median to determine if a distribution is normally…

A:

Q: . Use the following information regarding an equal-weighted equity index and assume that all…

A:

Q: Given that p(A)=.31, p(B│A) =.39, and p(A│B) =.31, are A and B (a) independent? (b) exclusive?

A: given data  P(A) = 0.31 P(A|B) = 0.31 P(B|A) = 0.39

Q: P is a probability density function on a Sample space of (1,2,3) P(1) = 0.38 P(3) = 0.33 Find the…

A: Farmula used  Sd(x)=√V(x)

Q: 1.Answer by true or false by justifying your reasoning A) The analysis of data from a distribution…

A: In the given problem we have to answer the given questions by true or false.

Q: petri dish can has an average of 2.5 per cm2 . i. Define the variable of interest for this scenario.…

A: It is given that the number of bacterial colonies on a petri dish can has an average of 2.5 per cm2.…

Q: Engineers must consider the breadths of heads when designing helmets. The company researchers have…

A: GivenMean(μ)=6.1standard deviation(σ)=1.6

Q: Create a Histogram manually or using Excel for the following average gas mileage: 24, 17, 14, 22,…

A: The given observations are: 24,17,14,22,25,26,38,42,24,12,28,19,32,21,35,28,21,31,18,19

Q: Another company's sales increase by the same percent each year. This growth is...

A: Given The sale of the company increases by the same % each year.

Q: Here are summary statistics for randomly selected weights of newborn​ girls:  n=186​, x=31.6 hg,…

A:

Q: 3. The Dagupan City Tribune reported that 75% of population oppose same sex marriages, 20% approve,…

A: The question is about categorical data analysis Given : Popl. prop. opposed to same sex marriage (…

Q: If your score on your next statistics test is converted to a z score, which of these z scores would…

A:

Q: A national polling organization conducted a survey asking people whether they would consider buying…

A: given data  x1 = 175n1  = 200x2 = 127n2 = 20095% ci for p1-p2. p^1 = x1n1 = 175200 = 0.8750p^2 =…

Q: Given the frequency distribution for the data, Age Frequency Relative Frequency [20,29] [30,39]…

A:

Q: 2. The following Table presents the joint probability distribution for two random variables X and Y.…

A: Solution-: We have following table:   Y=1 Y=2 X=1 1c 4c X=2 3c 2c We want to find,…