Giving a test to a group of students, the grades and gender are summarized below A Total Male 14 11 16 41 Female 8 10 15 33 Total 22 21 31 74
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Given information:
A | B | C | Total | |
Male | 14 | 11 | 16 | 41 |
Female | 8 | 10 | 15 | 33 |
Total | 22 | 21 | 31 | 74 |
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- Task-1. A professor at a university is wishing to determine whether his introductory statistics class has a good grasp of basic math or not. For this purpose, he chooses six students from his class and gives them a math proficiency test. To have a good grip of basic maths, the professor wants the class score above 70 marks on the test. The scores that the sample of six students gets are 62, 92, 75, 68, 83, and 95. Can the professor say with 90% confidence that the mean score for the whole class on the test would be above 70?Find an article of your choice which uses proportions, and copy and paste the address of that article in this step. Identify at least one sample proportion within the article (you can list more than one if you like), and state what that sample proportion measures. For example, if you're told that the sample proportion of people in Renton who are taller than 5'11" is 80.7%, and you're also told that the sample size is 57, then you would state the proportion as 46/57 in your response for this part of the assignment. You will probably have to interpret what is being said in the article in order to be able to state specifically what the sample proportion represents. Also, you might not have x or n, you might only have the percentage or a decimal equivalent. Often, the size of the sample is stated somewhere in the article, and it's important to find that value. So, if n is given, please include it in this part of the assignment. If stated in the article, identify whether the sample is a…if someone could please help me solve this that would be great :)
- In a scatter diagram of the data of 50 participants, how many points are plotted? A. 5 B. 25 C. 50 D. 100A manager would like to know if the type of coffee product a customer buys is related to gender. The manager randomly selected 100 female and 100 male customers and recorded the product they purchased. What type of test should the manager use? a. Goodness of Fit b. Test of Independence c. Test of Homogeneity d. One proportion z-testA categorical variable has three categories, with the frequencies of occurrence below. a. Compute the percentage of values in each category. b. What conclusions can you reach concerning the categories? Category Frequency A 9 B 26 C 15
- Shown below are the lengths in minutes of 6 randomly selected Disney movies. Use the data to compute each of the items requested. Don't forget to put units on your answers. Bambi 69 Cinderella 74 The Rescuers 78 Dumbo 64 Monsters, Inc 92 Wall E 98 What is the sample mean?Determine whether the statement is true or false. If it is false, rewrite it as a true statement. A population is the collection of some outcomes, responses, measurements, or counts that are of interest. Choose the correct answer below. A. True. B. False. A sample is the collection of all outcomes, responses, measurements, or counts that are of interest. C. False. A population is the collection of all outcomes, responses, measurements, or counts that are of interest.Winston has just gone grocery shopping. The mean cost for each item in his bag was $3.48. He bought a total of 9 items, and the prices of 8 of those items are listed below: $2.75,$4.06,$3.16,$3.92,$4.29,$2.77,$3.01,$4.57 Determine the price of the 9th item in his bag.
- After a comprehensive survey is conducted, you are presented with the accompanying data on the total incomes of the “upper class”, the “middle class”, and the “lower class” in five parishes. Rank them in order of inequality? How did you make your determination?A group of students were surveyed about the number of siblings they have. Their responses are summarized in the frequency table below. How many students responded to the survey? Number of Siblings Frequency 0 6 1 8 2 5 3 3 4 1 5 or more 3