Matt makes $80 a month mowing lawns. His friend James also mows lawns, but he makes x dollars less per month than Matt does. Jam
2 answers:
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By the binomial theorem,
Each term containing a factor 6 is divisible by 3, since 3 divides 6. The remaining 1 and 2 sum to 3, which is also divisible by 3.
We are asked to solve the formula 
for 
. Starting off, we can divide both sides by 
, so we are left with only the variable on the right-hand side. Next, we need to multiply the reciprocoal of 
, which is 
to both sides. This gives us 
, which, when simplified, gives us 
. Hope this helped and have a phenomenal day!
Answer: -1.51
Step-by-step explanation:
Let be the population mean rating of car.
As per given , we have
Since population variance is known, so we use z-test.
Test statistic :
, where n= sample size
= Sample mean
= variance
As per given ,
n=300
Put these values in formula we get
Hence, the value of the test statistic is z= -1.51 .