# Math homework help

## Stats exam

Questions 1 to 20: Select the best answer to each question.

1. What is the rejection region for a two-tailed test when α = 0.05?

A. |z | > 1.645

B. |z | > 2.575

C. z > 2.575

D. |z | > 1.96

2. Consider a null hypothesis stating that the population mean is equal to 52, with the research hypothesis

that the population mean is not equal to 52. Assume we have collected 38 sample data from which we

computed a sample mean of 53.67 and a sample standard deviation of 3.84. Further assume the sample

## JanV only

Part 1

1. 49, 34, and 48 students are selected from the Sophomore, Junior, and Senior classes with 496, 348, and 481 students respectively. Identify which type of sampling is used and why

2. The name of each contestant is written on a separate card, the cards are placed in a bag, and three names are picked from the bag. Identify which type of sampling is used and why

## statistics questions

CAN ANY OF YOU DO IT WITHIN 7 HRS , PLEASE REPLY SOON.

## MATH - A study wants to examine the relationship between student anxiety for an exam

A study wants to examine the relationship between student anxiety for an exam and the number of hours studied. The data is as follows:

Student Anxiety Scores Study Hours

5 1

10 6

5 2

11 8

12 5

4 1

3 4

2 6

6 5

1 2

1.Why is a correlation the most appropriate statistic?

2.What is the null and alternate hypothesis?

## Maths Midterm Review Exam

**1. Solve the system of linear equations, using the Gauss-Jordan elimination method.**

## Math 105 assignment

hello

i need help with math assignment.

please answer them step by step in clear way.

thank you.