Answer:
the scores on her last test is x (x > 0)
because on her last tests she scored 4 points lower than she did on her fifth test
=> the scores in the 5th test is x + 4
because Angela’s average for six math tests is 87, we have:
=> on her last test, she had 85
=> on her 5th test, she had 85 + 4 = 89
Ashley
Vdksievvenwlaoyeyehaoxb
4-2 3/4= 1 1/4 (amount of water that rained into the gauge)
1 1/4= 5/4=10/8
10/8 divided by 1/8 = 10
So the rain lasted 10 hours
Answer:
a)
b)Yes
Step-by-step explanation:
n = 593
x = 28
Confidence level = 95%
So, at 95% = 1.96
Formula of confidence interval of one sample proportion:
=
=
=
Hence a 95 percent confidence interval for the proportion of all new websites that were anonymous is
b) May normality of p be assumed?
Condition for normality : np>10 and np(1-p)>10.
and
27.871 and 26.561063
Hence p is assumed to be normal since the condition is satisfied