Answer:
It should be correct
Step-by-step explanation:
Answer:
4 months
Step-by-step explanation:
<u>Club A</u>
<em>registration fee: </em>$0
<em>monthly fee</em>: $105
<em>After</em><em> </em><em>every</em><em> </em><em>month</em><em>,</em><em> </em><em>the</em><em> </em><em>total</em><em> </em><em>cost</em><em> </em><em>increases</em><em> </em><em>by</em><em> </em><em>$</em><em>1</em><em>0</em><em>5</em><em>.</em>
month 0: $0
month 1: $105
month 2: $210
month 3: $315
month 4: $420
month 5: $525
month 6: $630
<u>Club</u><u> </u><u>B</u>
<em>registration</em><em> </em><em>fee</em><em>:</em><em> </em><em>$</em><em>375</em>
<em>monthly</em><em> </em><em>fee</em><em>:</em><em> </em><em>$</em><em>8</em><em>0</em>
<em>Notice how</em><em> </em><em>Club</em><em> </em><em>B's</em><em> </em><em>total</em><em> </em><em>reaches</em><em> </em><em>Club</em><em> </em><em>A's</em><em> </em><em>total</em><em> </em><em>after</em><em> </em><em>2</em><em> </em><em>months</em><em>.</em>
month 0: $375
month 1: $455
month 2: $535
month 3: $615
month 4: $695
Caillan's pocket money increased 20-15=5 dollars per week, or to 20-15=1.33 of it's original amount. This is a 33% increase.
Answer: B) 4.963±0.019.
Step-by-step explanation:
Confidence interval for population mean ( when population standard deviation is not given) is given by :-
, where
= Sample mean
n= Sample size
s= sample standard deviation
t* = critical t-value.
As per given:
n= 50
Degree of freedom = n-1 =49

s= 0.067 lb
For df = 49 and significance level of 0.05 , the critical two-tailed t-value ( from t-distribution table) is 2.010.
Now , substitute all values in the formula , we get

Hence, a 95% confidence interval for the mean weight (in pounds) of the mulch produced by this company is
.
Thus , the correct answer is B) 4.963±0.019.
Answer:
0.5, 5.5
Step-by-step explanation:
ive done this worksheet before