Question

In: Math

Question 1 Seven baseballs are randomly selected from the production line to see if their stitching...

Question 1
Seven baseballs are randomly selected from the production line to see if their stitching is straight. Over time, the company has found that 89.4% of all their baseballs have straight stitching. If exactly five of the seven have straight stitching, should the company stop the production line?
   Yes, the probability of five or less having straight stitching is unusual
   No, the probability of five or less having straight stitching is not unusual
   No, the probability of exactly five have straight stitching is not unusual
   Yes, the probability of exactly five having straight stitching is unusual
  
Question 2

A soup company puts 12 ounces of soup in each can. The company has determined that 97% of cans have the correct amount. Which of the following describes a binomial experiment that would determine the probability that a case of 36 cans has all cans that are properly filled?
   n=36, p=0.97, x=36
   n=36, p=0.97, x=1
   n=12, p=0.36, x=97
   n=12, p=0.97, x=0


Question 3

A supplier must create metal rods that are 2.3 inches width to fit into the next step of production. Can a binomial experiment be used to determine the probability that the rods are the correct width or an incorrect width?
   No, as the probability of being about right could be different for each rod selected
   Yes, all production line quality questions are answered with binomial experiments
   No, as there are three possible outcomes, rather than two possible outcomes
   Yes, as each rod measured would have two outcomes: correct or incorrect
  
Question 4

In a box of 12 pens, there is one that does not work. Employees take pens as needed. The pens are returned once employees are done with them. You are the 5th employee to take a pen. Is this a binomial experiment?
   No, binomial does not include systematic selection such as “fifth”
   No, the probability of getting the broken pen changes as there is no replacement
   Yes, you are finding the probability of exactly 5 not being broken
   Yes, with replacement, the probability of getting the one that does not work is the same
  
Question 5

Sixty-eight percent of products come off the line within product specifications. Your quality control department selects 15 products randomly from the line each hour. Looking at the binomial distribution, if fewer than how many are within specifications would require that the production line be shut down (unusual) and repaired?
   Fewer than 8
   Fewer than 9
   Fewer than 11
   Fewer than 10
  
Question 6

The probability of a potential employee passing a drug test is 86%. If you selected 12 potential employees and gave them a drug test, how many would you expect to pass the test?
   8 employees
   9 employees
   10 employees
   11 employees
  
Question 7

The probability of a potential employee passing a training course is 86%. If you selected 15 potential employees and gave them the training course, what is the probability that 12 or less will pass the test?
   0.862
   0.148
   0.100
   0.852
  
Question 8
Off the production line, there is a 3.7% chance that a candle is defective. If the company selected 45 candles off the line, what is the probability that fewer than 3 would be defective?
   0.975
   0.916
   0.768
   0.037

Solutions

Expert Solution



Related Solutions

The following datagive the prices of seven textbooks randomly selected from auniversity bookstore.$86...
The following data give the prices of seven textbooks randomly selected from a university bookstore.$86$174$109$119$59$155$145a.Find the mean for these data. Calculate the deviations of the data values from the mean. Is the sum of these deviations zero?Mean =Deviation from the mean for $174 =Sum of these deviations =b.Calculate the range, variance, and standard deviation. [Round your answers to 2 decimal places.]Range =Variance =Standard deviation =
In the spreadsheet "Salary Data" you see sample salaries of employees that were randomly selected from...
In the spreadsheet "Salary Data" you see sample salaries of employees that were randomly selected from two departments of a company. Assuming that the populations are distributed normally, conduct the appropriate test to determine whether the average salaries are different between these two departments (alpha = .05). Develop the hypotheses and report your conclusion. Department A Department B 51000 48000 54000 54000 53000 46000 54000 48000 47000 55000 46000 52000 54000 51000 52000 46000 50000 51000 48000 48000 48000 53000...
A production line manager wants to determine how well the production line is running. He randomly...
A production line manager wants to determine how well the production line is running. He randomly selected 90 items off of the assembly line and found that 8 were defective. (Assume all conditions have been satisfied for building a confidence interval). Find the 99% confidence interval. (0.0234, 0.1099) (0.0116, 0.1662) (0.0301, 0.1477) (0.0396, 0.1382)
A hair salon in Cambridge, Massachusetts, reports that on seven randomly selected weekdays, the number of...
A hair salon in Cambridge, Massachusetts, reports that on seven randomly selected weekdays, the number of customers who visited the salon were 41, 64, 43, 28, 54, 44, and 56. It can be assumed that weekday customer visits follow a normal distribution. [You may find it useful to reference the t table.] a. Construct the 90% confidence interval for the average number of customers who visit the salon on weekdays. (Round intermediate calculations to at least 4 decimal places, "sample...
. Samples of 20 products from a production line are selected every hour. Typically, 2% of...
. Samples of 20 products from a production line are selected every hour. Typically, 2% of the products require improvement. Let X denote the number of products in the sample of 25 that require improvement. A production problem is suspected if X exceeds its mean by more than 3 standard deviations. (a) If the percentage of products that require improvement remains at 2%, what is the probability that X exceeds its mean by more than 3 standard deviations? (b) If...
Some frozen food dinners were randomly selected from this week's production and destroyed in order to...
Some frozen food dinners were randomly selected from this week's production and destroyed in order to measure their actual calorie content. The claimed calorie content is 200. Here are the calorie counts for each frozen dinner selected: 190 203 210 212 186 207 196 208 198 214 208 189 Assume the distribution of calories is normal. (a) The test statistic (z/t) is? Use two decimals. (b) Does the sample indicate that the mean calorie content is 200? Set α=0.04. (c)...
Fifteen people were randomly selected from the population and randomly assigned to 1 of 3 experimental...
Fifteen people were randomly selected from the population and randomly assigned to 1 of 3 experimental groups. Group 3 was included as the control group and did not receive any treatment. Use the following data set to answer the questions. Group 1 Group 2 Group 3 21 25 32 53 54 41 44 26 86 72 32 75 Is there a significant difference (α=0.05) between at least two groups?   A. Yes B. No C. Not possible to determine D. Alpha...
The table below gives the number of hours seven randomly selected students spent studying and their...
The table below gives the number of hours seven randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, yˆ=b0+b1x, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line...
The table below gives the number of hours seven randomly selected students spent studying and their...
The table below gives the number of hours seven randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, yˆ=b0+b1x, for predicting the grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line to make...
A hair salon reports that on seven randomly selected weekdays, the number of customers who visited...
A hair salon reports that on seven randomly selected weekdays, the number of customers who visited the salon were 78,31,42,43,51,32,and 31. It can be assumed that weekday customer visit follow a normal distribution. a) construct the 90% confidence interval for the average number of customers who visit the salon on weekdays ( round intermediate calculations to at least 4 decimal places. Sample mean and sample standard deviation to 2 decimal places and t value to 3 decimals and final answer...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT