the sum of two numbers is 34. 1/2 the first number plus 1/3 of the second number is 14. write a system to find the numbers. solv
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Answer:
#5: d=22, #6: , #7:
Step-by-step explanation:
#5:
#6:
#7:
Answer:
Step-by-step explanation:
Given that to save money, a local charity organization wants to target its mailing requests for donations to individuals who are most supportive of its cause.
Men women
Sample size 5 5
Mean rate 6.2 5.3
Mean diffference =
Std error for difference = 0.25 (given)
Since we have two groups and also sample sizes are very small we can use t significant value for finding out confidence interval
df = 5+5-2 =8
t critical value for 80% two tailed = 1.397
Conf interval 80%
=