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Explain Scatter plot and correlation- Construct a scatter plot and Find the value of the linear correlation coefficient r
Voting behaviour is studied for the random sample of population, by researchers who're interested in the relationship between voting behaviour and many different demographic variables.
A shoe manufacturer is known to manufacture 5% of shoes as defective. The ShoeFit store recently ordered 300 pairs from this manufacturer. Let x be number of defective shoes in the order r
Express the hypotheses as well as identify the type of error. Presume you are the manager of a paint manufacturing factory.
Assume you were preparing two-way tables of percentages for following pairs of variables. How would you run the percentages?
Describe in words what your ANOVA would look like (i.e. how would the values be distributed) if there were the perfect relationship between your two variables. Be Specific.
Find out the variance and standard deviation for two distributions above. Compare the variation of data sets. Decide if one data set is more variable than the other.
Find out the correlation coefficient for the data. Find out the equation for the regression line for data, and predict the final grade of the student who misses 3.5 days.
One hundred Lower Wabash Tech students take the 10-question multiple-choice test with 4 answers to each question, exactly one of which is correct. All of students are unprepared and should guess at
Explain and Identify the type of error based on the rejecting of null hypothesis. In the real world a specified null hypothesis is false
Employ Chebyshev's theorem to find out what percent of the values will fall between 58 and 82 for data set with mean of 70 and standard deviation of 4.
How many unprepared students would've to take this test to guarantee ten score of 6? Ten scores of 7? Ten scores of 8? Show your work or explain your reasoning.
How to test the hypothesis based on Chi-square test for independence of attributes. At a large commercial bakery one of the measures utilized to evaluate employees is the number of broken cookies per
You're given the following frequency distribution for number of errors 55 students made in the test
Offer the conclusion based on p-value approach and the results of statistical test produce a p-value of 0.95.
Suppose the random variable X is normally distributed with the mean m = 130 and standard deviation s = 26. Find out the 10th and 85th percentiles.
Explain Hypothesis testing of single mean- large sample test and The mean return for a random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57
Downhill Ski Resort in Colorado has the accumulated information from records of past 30 winters regarding the measurable snowfall. This information is given below:
Explain Chi square test for independence of attribute. To conclude whether two categorical variables are independent, one should use the-
Find out the probability of randomly chosen male turkey weights of at least 17.5 pounds at maturity? Find out the probability of the random sample of 49 male turkeys having average of at least 17.5 po
How to Paired Sample t test. The data below displays the time to process an inpatient admission
Researchers at the pharmaceutical company have found that the effective time duration of the safe dosage of pain relief drug is normally distributed with mean two hours and standard deviation 0.3 ho
Explain Independent sample t -test. the waiting times of vital patient are equal to or greater than non-urgent patients
Leo has the pizza business. The times to make and deliver pizzas are approximately normally distributed with the mean m =20 minutes and standard deviation s = 10 minutes.
Test for the true population mean and using a 95% confidence level. A sample of ten ER patients was directed to determine their average wait time and to compare this to the target wait time.