Grade 11 and 12 Mathematics (Moderator: geoffrey)

A two-tailed hypothesis test is performed at the = 0.05 level. A critical value of z(0.025) = 1.96 ...

Started by mspears3

The National Institute of Mental Health reported in the past that 20 of adult Americans suffer from ...

Started by mpobi80

A recent study by researchers at EMU and UM found that an increasing number of college women view ...

Started by Deast7027

The P-value for a hypothesis test concerning the difference in two population proportions is always ...

Started by audie

A 90 confidence interval for p1 - p2 is (0.05, 0.002). Which of the following is the 95 confidence ...

Started by 2125004343

A study determined that in 2009, 38 of those in a random sample of 100 adult Americans had accounts ...

Started by Jkov05

A study is conducted to determine whether the proportion of airline passengers complaining with ...

Started by yoroshambo

Use the following statistical output for a difference between two-proportions to determine the upper ...

Started by MirandaLo

The confidence interval formula for estimating when n is large is based on the Central Limit ...

Started by cool

The t confidence interval formula for estimating should only be used when the population being ...

Started by sammy

The spread of the sample mean decreases when 1.the population mean increases. 2.the population ...

Started by ssal

Revenues reported last week from 25 randomly selected stores owned by an international clothing ...

Started by jho37

The large sample z test for 1 - 2 can be used as long as at least one of the two sample sizes, n1 ...

Started by cabate

The number of degrees of freedom of the two-sample t test are the same as the degrees of freedom for ...

Started by Caiter2013

Two fire alarms A and B are tested independently to determine if there is a statistical difference ...

Started by scienceeasy

When testing hypotheses concerning differences in treatment effects from an experiment, the test ...

Started by 2125004343

An article describes a study of the effectiveness of a fabric device that acts like a support ...

Started by londonang

A chi-squared goodness-of-fit can be used to test hypotheses about the proportion of the population ...

Started by Marty

The chi-squared test statistic, X2, measures the extent to which the observed cell counts differ ...

Started by bobbysung

For a sample size n, there are n - 1 degrees of freedom associated with the goodness-of-fit test ...

Started by Kikoku

The expected cell count for the row a and column b entry in a bivariate contingency table is equal ...

Started by soccerdreamer_17

What is the approximate P-value for X2 = 11.64 and df = 5? 1.0.095 2.0.020 3.0.057 4.0.088 ...

Started by Anajune7

Does including a gift with a request for a donation influence the proportion who will make a ...

Started by V@ndy87

Which of the following situations will add the largest component to a X2 statistic? 1.an expected ...

Started by 809779

Forty subjects are asked about their preferred method to obtain the national news daily. They ...

Started by LCritchfi