Z scores table
What is the p-value if the Z score is 0.2
0.4207
if the df is 10 and has a confidence level of 70% what is the upper-tail probability of P
.15
What confidence interval correlates to the z-score 1.96
95%
What is the p-value if the Z score is 2.3
0.0107
if the df is 8 and has a confidence level of 50% what is the upper-tail probability of P
.25
What is the z score when the confidence is 90%
1.645
What is the p-value if the Z score is 3.5
0.00023
if the df is 15 and has a confidence level of 99.8% what is the upper-tail probability of P
.001
What confidence interval correlates to the z-score .84
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%
What is the p-value if the Z score is 1.7
if the df is 21 and has a confidence level of 95% what is the upper-tail probability of P
What is the p-value if the Z score is 0.5
0.30853
if the df is 29 and has a confidence level of 99.9% what is the upper-tail probability of P
.0005
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%