To construct a confidence interval for the difference between two population means mu 1 minus mu 2μ1−μ2​, use the formula shown below when both population standard deviations...

59% of men consider themselves professional baseball fans. You randomly select 10 men and ask each if he considers himself a professional baseball fan. Find the probability that the number who consider...

whats the standard deviation of the data set below, Rounding your answer to three decimal places? 2, 4, 6, 6, 8, 10, 11, 12, 14, 16, 17, 18, 18, 18

With a stratified random sample, a population is broken up into different subgroups and then simple random samples are conducted within each of these subgroups.

statistics probability

I want to know if there are differences in firing rate of one neuron between two types of trials: left and right. Data are not normal, paired and unmatched and the size of samples is different. For...

use formula s=0.8t^2 + vot

12 experiments before the change and records the following for the time for completion (in seconds): 20, 22, 23, 20, 19, 25, 24, 24, 23, 24, 22, 23. She then changes the amount of chemical A, conducts...

Question 7 (1 point)   Suppose a car dealership offers a low interest rate and a longer payoff period to customers or a high interest rate and a shorter payoff period to customers, and most...

The female death rate in Britain in 2009 was 49.3 per 100 000 of population and the male death was 71.2 per 100 000. Given that the population of Britain was 61 113 295, how many more male deaths...

This is a conditional probability question I am struggling to solve and understand. Any insight would be so very useful.  Here is the problem: A five digit number is formed from the digits 1,2,3,4,5...

If a 35-week gestation period baby weighs 2300 grams and a 41-week gestation period baby weighs 2700 grams, find the corresponding z-scores. Which baby weighs less relative to the gestation period...

The paired sample t statistic is suitable in the foll situation

The pulse rates of 141 randomly selected adult males in the town of Roaches, Illinois vary from a low 43 bpm (beats per minute) to a high 119 bpm.  Calculate the minimum sample size required...

determine whether the question is a statistical question.

Suppose you were presented with the following prediction regression equation: Yhat = 30,000 + 2,000 (X) where the dependent variable is annual salary and the independent variable is years on the...