A company gave an intensive training to its salesmen to increase the sales. A random sample of 10 salesmen was selected and the value (in lakhs 'of their sales per month, made before and after the training is recorded in the following table. Test whether there is any increase in mean sales at 5% level of significance. Salesman 1 2 4 5 6 7 8 9 10 Before 15 22 17 12 20 18 14 10 16 After 17 23 16 20 14 21 18 20 10 11 3.

Q: True or False 1. As the proportion of the outcome increases, the odds decreases.

A: Hello! As you have posted 5 different questions, we are answering the first question. In case you re...

Q: A sample of students involved in laboratory accidents was categorized by age. The results appear as:...

A:

Q: If a can is selected randomly, calculate the probability of getting: a) a defective can; b) a good c...

A: Let us define some events A : a can coming from line A  B : a can coming from line B C : a can comin...

Q: I need to verify the steps for this and see if there is another way to do this problem; please help....

A: Given,sample size(n)=30mean(μ)=$4.59standard deviation(σ)=$0.10

Q: Imagine a dataset with a mean of 60 and a median of 40, what does this tell you about skewness?

A: Given : mean = 60  median = 40

Q: A probability based on equally likely outcomes is called a __________ probability.

A:

Q: 6. A cooperative manager claims that the average daily income of the cooperative is P30,000 with sta...

A: One sample t test : The one-sample t-test may be a applied math hypothesis take a look at accustomed...

Q: You are taking a quiz that has 10 multiple-choice questions. If each question has 3 possible answers...

A:

Q: Jenelle draws one from a standard deck of 52 cards. a) Determine the probability of drawing either ...

A: a) In a standard deck of playing cards there are total 52 cards and 4 suits, such as hearts, diamond...

Q: A community college employs &85 full-time faculty members. To gain the faculty's opinions about an u...

A: Given, There are 85 factuly members in a college. To gain the faculty opinion on upcoming building p...

Q: The middle interval around the population proportion which captures 95% of sample proportions of  ve...

A:               formula for the sample size                                

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally...

A:

Q: Theorem 5-6. (b) Distribution of the Difference of Two Random Variables. If X and Y are independent ...

A:

Q: 20. Insomnia Treatment A clinical trial was conducted to test the effectiveness of the drug zopi- cl...

A:

Q: Gamification is the application of game- design elements and game principles in non-game contexts. I...

A: Given the variables considered in the study of the effects of gamification on learning statistics in...

Q: interest. When using this type of table, what area of the curve would you use to find the correspond...

A: Here use basic properties of normal curve 

Q: A sample of 10 students from a school was selected. Their scores in a particular subject are 72, 82,...

A: Given that n =10 , mu =90 Carry out the one sample mean t test using the given data

Q: Smooth Rhythm 12 13 15 10 Standard 11 14 Use the Venn Diagram to determine the following probabiliti...

A: For the venn diagram P(Rhythm/smooth) = ? P(Rhythm/standard) = ? P(standard/Rhythm) = ? P(Rhythm/smo...

Q: For a population with a mean equal to 200 and a standard deviation equal to 30, calculate the standa...

A:

Q: For a standard normal distribution (mean=0, standard deviation=1) Find: P(z < 1.29) Enter at least 4...

A: According to the given information, we have Z score = 1.29 Left tailed

Q: Calculate the mean and standard deviation for the following set of analytical results: 34.65, 34.97...

A:

Q: 4. What is the mode of the data set? 5. Calculate the mean and median INCLUDING the outlier: median ...

A:

Q: On a freeway 85% of vehicles violate the speed limit (π = 0.85). From the population of all vehicles...

A: The sample size is given by

Q: A researcher was interested in studying if there is a significant relationship between the severity ...

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case yo...

Q: A bag contains 9 pennies, 6 nickels, and 5 dimes. If a coin is randomly selected from the bag, then ...

A: We have given that,  A bag contains,  Pennies = 9 Nickels = 6 Dimes = 5 Total  = 9+6+5 = 20 Then, We...

Q: Suppose that 10% of the population of the U.S. is left-handed. If a random sample of 195 people from...

A:

Q: Consumer: Radon Gas “Radon: The Problem No One Wants to Face" is the title of an article appearing i...

A: Given data     1.9, 2.8, 5.7, 4.2, 1.9, 8.6, 3.9, 7.2 and n=8 Here we have to interpret that based o...

Q: 11 The stemplot below displays the times, in seconds, for Are there any outliers? 25 students to run...

A: For the given set of 25 observations of the running time for 100 meters, the outliers can be defined...

Q: Determine the following probabilities. Write your answers as reduced fractions. P(sum is odd) =   ?...

A:

Q: Sr # Tempera (Number of Air (Degrees Conditio Outside Sales X(outsid Y(sales) X*2 Y*2 Y=-5 e ture te...

A: Given data depicts the outside temperature and the number of air conditioning units sold. A scatterp...

Q: During the COVID-19 pandemic, drive-up grocery delivery became very popular with customers. Two US r...

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

Q: Given the following information: P(A) = 0.63 P(B) = 0.45 P(A and B) = 0.4 P(B given A) = 0.1 What i...

A:

Q: Gamification is the application of game- design elements and game principles in non-game contexts. I...

A: Given the variables used to conduct a study that the effects of gamification on learning statistics ...

Q: ind the probability that the supply will be accepted entirely.

A: Here Given Total Number of USB drives=250 Number of Defective drives=15 Number of Non defective driv...

Q: In a factory there are 100 skilled, 250 semi-skilled and 150 unskilled workers. It has been observed...

A: Given :  There are 100 skilled, 250 semi-skilled &amp; 150 unskilled workers on an average a unit is...

Q: How many 3-digit number can be formed from the digits 0,1,2,3  a. if no two digits are to be the sam...

A: * SOLUTION :-  from the given information the calculation is given below    

Q: Two samples of scores on a survey are as follows: Sample A: 10 7 6 Sample B: 183 10 112 7 28. What i...

A:

Q: Researchers constructed a confidence interval for the mean body temperature of healthy US adults, us...

A: Definition of confidence interval: Were this procedure to be repeated on numerous samples, the propo...

Q: Are gender and level of education of employees in this corporation statistically independent? e. Wha...

A: Here use tree diagram 

Q: (a) Run linear regression on the closing price data for BTC in the range of 12/15/2020 to 12/28/2020...

A: The BTC closing price data from 12/15/2020 to 2/21/2021 is given below : Date Close* 21-Feb-21 ...

Q: In a certain country the heights of adult men are normally distributed with a mean of 68.9 inches an...

A:

Q: Let X1,...,X, be a random sample from a normal distribution N(u, o2). (a) Find a 90% confidence inte...

A: Since you have posted multiple sub-parts of  questions, we will solve first three sub-parts of quest...

Q: Does the interval above provide evidence that more than 60% of northern Kentucky residents are oppos...

A: Given : A 2013 survey of 1692 northern Kentucky AAA members was asked their opinion on instituting a...

Q: Calculate the median and mode (by grouping method) from the following data: Central size : 15 25 35 ...

A: For a distribution, median is the middle most value. In other words, median is that value of the dis...

Q: In an analysis of two independent samples, log transformation has been applied to original data so t...

A: Given the calculated sample mean difference of the log-transformed data between two samples is 5.87.

Q: semiconductor manufacturer produces devices used as central processing units in personal computers. ...

A: The given data is  680 669 719 699 670 710 722 663 658 634 720 690 677 669 700 718 690 681 702 696 6...

Q: What middle interval captures the fill of 95% of all bottles?

A: Let X denote the amount of beer in a bottle. Given that X follows N(mean = 330, SD = 2.9), then Z = ...

Q: calculate all appriate measures of variation for the interval data in data set a. show all work and ...

A: By using R-software: &gt; x=c(5,6,10,2,5,15,13,4);x[1]  5  6 10  2  5 15 13  4&gt; n=length(x);n[1] ...

Q: How many different license plates can be generated if the configuration of the first 4 characters ar...

A: The first 4 letters have to be capital and the last 3 have to be numbers with no repetition.  For th...

Q: 50. A restaurant places cards on the dining tables, inviting cus- tomers to complete an online surve...

A: Given, in a restaurant places cards on the dining tables, inviting customers to complete an online s...