Assume a math professor who teaches differential calculus discovered that the average course grade prior to COVID was 73.8. During the COVID lockdowns, this calculus professor remotely taught a differential calculus class to 124 students with an average course grade of 78.9 and a sample standard deviation of 11.1. Is this a very high course grade? Use ?(something look a) =0.05.

Assume a math professor who teaches differential calculus discovered that the average course grade prior to COVID was 73.8. During the COVID lockdowns, this calculus professor remotely taught a differential calculus class to 124 students with an average course grade of 78.9 and a sample standard deviation of 11.1. Is this a very high course grade? Use ?(something look a) =0.05.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

se z scores to compare the given values. Based on sample data, newborn males have weights with a mean of 3248.6 g and a standard deviation of 955.4 g. Newborn females have weights with a mean of 3054.3 g and a standard deviation of 569.9 g. Who has the we that is more extreme relative to the group from which they came: a male who weighs 1500 g or a female who weighs 1500 g? Since the z score for the male is z = |and the z score for the female is z= the has the weight that is more extreme (Round to two decimal places.)
When using 1-Var Stats on a scientific or graphing calculator, the resulting statistical output includes two values for the standard deviation of the data set. These values are labeled as Sxand σx in the statistical output. Why is it necessary to give two values for the standard deviation? How would you choose which one to use as the standard deviation of a data set you are working with? Be sure to explain the difference between these two values as you answer these questions
Suppose that the hemoglobin levels among healthy females are normally distributed with a mean of 14.1 gdL. Research shows that exactly 95% of healthy females have a hemogoblin level of 16.1 gdL. What is the standard deviation of the distribution of hemoglobin levels and healthy females. Carry you intermediate computations to atleast four decimal places, and round your answer to at least two decimal places.
Mike thinks that there is a difference in quality of life between rural and urban living. He collects information from
Assume that the mean height of men in the United States is 70 inches, with a standard deviation of 3 inches. A particular man is 80 inches tall. Find the z-score of his height. (Round to two decimal places.)
Calcium levels in people are normally distributed with a mean of 9.7 mgdL and a standard deviation of 0.5 mgdL . Individuals with calcium levels in the bottom 10% of the population are considered to have low calcium levels. Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.
solve question 2 asap within 15 mins or else downvote
A sample of 126 was found to have a standard deviation of 5.9. An interval estimate for ?μ based on the sample was (27.576, 29.464). What is the margin of error from this estimate? What was the ??,?tν,α that was used to get this interval extimate?
Use calculator t3 .
Solve question 5. Show work for it aswell please with the steps.
Manny creates a new type of bowling ball. His new model knocked down an average of 9.46 pins, with a standard deviation of 1.37 pins. The older model bowling ball knocked down 8.15 pins on average, with a standard deviation of 3.71 pins. He tested each bowling ball model 10 times. What is the effect size of the difference in the bowling ball models? (Write your answer below, to two decimal places as a positive value; sign doesn't matter)
Suppose the police have set up automatic speed surveillance on a street in an area. During one week they get 987 measurements. The average in the data set is 50,7 kh/h, with a standard deviation of 3,2 km/h. Calculate the z-value for an observation with the value 53,8 km/h.