Answer:
Step-by-step explanation:
To test the hypothesis is the mean SAT score is less than 1520 at 5% significance level
The nul hypothesis is
The alternative hypothesis is
The test statistic is
The t - test statistics is -1.603
The t - critical value is,
The small size is small and left tail test.
Look in the column headed and the row headed in the t - distribution table by using degree of freedom is,
d.f = n - 1
= 20 - 1
= 19
The t - critical value is -1.729
The conclusion is that the t value corresponds to sample statistics is not fall in the critical region, so the null hypothesis is not rejected at 5% level of significance.
there is insignificance evidence ti indicate that the mean SAT score is less than 1520. The result is not statistically significant
6 hours in the morning (from 6 am to 12 am)
1:45 in the afternoon (from 12 am to 1:45 pm)
sum
6:00 + 1:45 =
7:45 ( 7hours and 45 minutes)
Answer:
y=$35
Step-by-step explanation:
y= total number in your account
x= # of weeks
y=5x + 20
y=10x + 5
x=3 weeks
Answer:
c!!
Step-by-step explanation:
last saturday i did a worksheet that had the sae question