STATS PROJECT

Z scores table

100

What is the p-value if the Z score is 0.2

0.4207

200

What is the p-value if the Z score is 2.3

0.0107

300

What is the p-value if the Z score is 3.5

0.00023

400

What is the p-value if the Z score is 1.7

0.0445

500

What is the p-value if the Z score is 0.5

0.30853

T scores table

100

if the df is 10 and has a confidence level of 70% what is the upper-tail probability of P

.15

200

if the df is 8 and has a confidence level of 50% what is the upper-tail probability of P

.25

300

if the df is 15 and has a confidence level of 99.8% what is the upper-tail probability of P

.001

400

if the df is 21 and has a confidence level of 95% what is the upper-tail probability of P

.025

500

if the df is 29 and has a confidence level of 99.9% what is the upper-tail probability of P

.0005

Confidence intervals

100

What confidence interval correlates to the z-score 1.96

95%

200

What is the z score when the confidence is 90%

1.645

300

What confidence interval correlates to the z-score .84

60%

Hypothesis testing

300

A random sample of 288 voters registered in the state of California showed that 141 voted in the last general election. is higher than the national trend that the percent of voter turnout is 30%. whats HO and HA

Ho=30%

Ha>30%

500

suppose in a random sample of 500 bookstores across the United States, also 265 also sell CDs. conduct a test of significance testing the hypothesis that 50% of bookstores in the united states. whats Ho and Ha

ho=50%

ha>50%