Question
Asked Oct 21, 2019

At a .01 “alpha level”, what is the “critical cutoff” z-score for a “one-tailed test”? Explain how you figured out this z-score.

check_circleExpert Solution
Step 1

Introduction:

A one-tailed test may be of two types: left-tailed or right-tailed, depending upon whether the alternative hypothesis is of the less than-type (<) or greater-than type (>).

The z-test uses the standard normal distribution to find its cut-off values.

For a left-tailed z-test, the cut-off at α value (significance level) 0.01 is the value of the standard normal variable, Z, such that P (Z > z) = 0.01. This particular value is denoted by = z0.01, so that, P (Z > z0.01) = 0.01.

For a right-tail...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour*

See Solution
*Response times may vary by subject and question
Tagged in

Math

Statistics

Hypothesis Testing

Related Statistics Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: How can I calculate the different values in the equation y=ax+b for the regression line of a sample?...

A: The form of the simple linear regression is given by,

question_answer

Q: five sophomores were given an english achievement test before and after receiving instruction in bas...

A: The following table shows the given data and all the calculations

question_answer

Q: 8 Assume total cholesterol value for a certain population is approximately bell shaped with a mean o...

A: Consider,X be a total cholesterol value that follows normally distribution with man of 200mg/ 100ml ...

question_answer

Q: Suppose that the probability that a child living in an urban area in the US is obese is 20%. A socia...

A: The pmf of the binomial random variable with parameters n = 10 and p = 0.20 is given as follows:

question_answer

Q: Based on Floretta's study regarding how many new customers she gain per year, an the following resul...

A: The value of test statistic for a right tailed test is 1.82. The critical value for a right tailed t...

question_answer

Q: 4. A study of working couples measures the income X of the husband and the income Y of the wife in a...

A: Here, X denotes the income of the husband and Y denotes the income of the wife. In this context, it ...

question_answer

Q: Find z such that 3.3% of the normal curve lies to the left of z

A: It is provided that 3.3% of the normal curve lies to the left of z. The area under a particular z-va...

question_answer

Q: An alcohol awareness task force at a Big-Ten university sampled 200 students after the midterm to as...

A: The total number of students are 200 and the number of students who did well on midterm and also wen...

question_answer

Q: It is possible to score higher than 1600 on the combined mathematics and reading portions of the SAT...

A: SAT scores are normally distributed with mean = 1017 and standard deviation = 217proportion of SAT s...