Consider a hypothesis test of difference of means for two independent populations x1 and x2. Suppose that both sample sizes are greater than 30 and that you know ?1 but not ?2. Is it standard practice to use the normal distribution or a Student's t distribution?Use the Student's t distribution because both sample sizes are greater than 30.Use the normal distribution because we do not know ?2. Use the normal distribution because both sample sizes are greater than 30. Use the Student's t distribution because we do not know ?2. Consider a hypothesis test of difference of means for two independent populations x, and x3. Suppose that both sample sizes are greater than 30 and that you know o, but not o,. Is it standard practice to use the normal distribution or a Student'st distribution?O Use the Student's t distribution because both sample sizes are greater than 30.O Use the normal distribution because we do not know o,.O Use the normal distribution because both sample sizes are greater than 30.O Use the Student's t distribution because we do not know o,.

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Description: Consider a hypothesis test of difference of means for two independent populations x1 and x2. Suppose that both sample sizes are greater than 30 and that you know ?1 but not ?2. Is it standard practice to use the normal distribution or a Student's t d

Given: two independent populations x1 and x2 n1 > 30 n2 > 30 sigma 1 known sigma 2 unknown…

Answered: Consider a hypothesis test of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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Consider a hypothesis test of difference of means for two independent populations x₁ and x₂. Suppose that both sample sizes are greater than 30 and that you know ?₁ but not ?₂. Is it standard practice to use the normal distribution or a Student's t distribution?

Use the Student's t distribution because both sample sizes are greater than 30.

Use the normal distribution because we do not know ?₂.

Use the normal distribution because both sample sizes are greater than 30. Use the Student's t distribution because we do not know ?₂.

Consider a hypothesis test of difference of means for two independent populations x, and x3. Suppose that both sample sizes are greater than 30 and that you know o, but not o,. Is it standard practice to use the normal distribution or a Student'st distribution?
O Use the Student's t distribution because both sample sizes are greater than 30.
O Use the normal distribution because we do not know o,.
O Use the normal distribution because both sample sizes are greater than 30.
O Use the Student's t distribution because we do not know o,.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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