40-49 50-59 60-69 70-79 80-89 90-99 Points How many students scored more than 89 points? Frequency (Number of Students)

Q: ind the mean score 50-59: 6 60-69:5 70-79: 7 80-89: 12 90-99: 10

A: Solution: Class(1) Frequency (f)(2) Mid value (x)(3) f⋅x(4)=(2)×(3) 50-59 6 54.5 327 60-69 5…

Q: What is an example of a summative assessment that you could use to evaluate mastery in meeting the…

A: The statement is "After the lesson on rounding two- and three-digit whole numbers, the students will…

Q: 0.3 6-4 0.1. 0.45(1-0.45) 120

A: Consider the mathematical expression 6-40.30.1. Evaluate the expression 6-40.30.1 as follows.…

Q: What does p < .05 mean? Explain how you would interpret this.

A: Given p&lt;0.05 means values of p is less than 0.05.

Q: Find the mean and the median for each list of values. (a) 63, 69, 71, 76, 85, 87 (mean) (Round the…

A: Mean: Mean is the expected value of a set of observations. In other words, mean is he average of the…

Q: he average (mean) aptitude score? The median aptitude score?

A:

Q: OMean (a) Which measures of central tendency do OMedian not exist for this data set? Choose all that…

A: Here the given data is in numeric form thus we can compute the mean.  Also the data can be arranged…

Q: What is the z score for test scores of 70 and 90?  TEST SCORES: 50,60,61,63,66,67,73,82,89,92

A: From the provided information, The test scores are 50, 60, 61, 63, 66, 67, 73, 82, 89, 92

Q: Ignacio is curious about the average age of cars in the commuter lot at his large university. He…

A: We can solve by the following given data

Q: ow could you q

A: Given data set : 17, 18, 21, 24, 25

Q: Mean (a) Which measures of central tendency do Median not exist for this data set? Choose all that O…

A: Mean: It is the sum of an observations divided by the total number of observations of the data set.…

Q: True or false? 8.5 = (8-5) O True O False

A: 8·5n=8·5n

Q: 4- A statistics student made the following grades on 7 tests: 76, 82, 92, 95, 79, 86, and 92 What is…

A: Given: data 76,82,92,95,79,86,92 n =7 to find: mean

Q: Three students want to estimate the mean word length of the same book. To do this, each student…

A: Given Data: Let us consider the given table, Sample Word length Sample Mean 1 5,5,2,6,6 4.8 2…

Q: Describe about the difference between population means&gt;

A: Assuming that we are comparing the difference between two population means which are defined as The…

Q: Stem (ones) Leaf (tenths) 2,6,7,7,7,8,9,9,9 0,2,4,4,7,7,7,8,8,8,9,9,9,9 4…

A: From the stem and leaf plot, we see that the lowest value= 3.2 and the highest value = 6.6

Q: 97 48.5 48.5 91.5 -43 -43 51 -94 40.5 -83.5 23 -18 -65.5 28 -122 -12 -115 35 -6 59.5 -7

A: Given:

Q: Based on the frequency distribution above, find the cumulative frequency for class 27-30. (Your…

A: let us first find the cumulative distribution table . cumulative frequency is the adding  frequency…

Q: C is wrong can you walk me through how to do the chi-square table. this is a statistics class

A: Given that T follows a gamma distribution i.e

Q: SAT Score Averages 1150 1140 1130- 1120 1110 1100 State Combined SAT Score Averages: 1994 - 1998…

A: The question is about graphical representation From given line graph : Combined SAT score avg. for…

Q: The distribution of course grades in a very large class is (approximately) Normal with mean 48 and…

A: Given: μ = 77 σ = 6 Formula Used: Z = X-μσ

Q: tem (ones) Leaf (tenths) 4 2,6,7,7,7,8,9,9,9 5 0,2,4,4,7,7,7,8,8,8,9,9,9,9 6…

A: From the given stem-and-leaf plot, the bolt lengths are  42, 46, 47, 47, 47, 48, 49, 49, 49, 50, 52,…