Apsychology researcher has a theory that predicts women will tend to carry more cash than men. a random sample of ersatz university students revealed that 16 females had a mean of $22.30 in their wallets with a standard deviation of $3.20, while 16 males had a mean of $17.30 with a standard deviation of $9.60. the test statistic for the researcher’s hypothesis is:

t=5.59

Step-by-step explanation:

We assume that the money in wallets of women and men are normally distributed.

Given : Sample size of females :

Sample mean :

Standard deviation :

Sample size of males :

Sample mean :

Standard deviation :

Since sample size is small (<30), so we use t-test.

The test static for difference of two population mean is given by :-

Hence, the test statistic for the researcher’s hypothesis is : t=5.59

i believe the answer is d.

hope it you! : d

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are