Response:
a) No significant difference exists between restaurants with order-confirmation boards and those without.
b) -12.5 ± 3.604 or C.I.E (-16.10, -8.90)
Detailed explanation:
For additional information, see the attachment below.
Response:
0.04
Detailed explanation:
In this scenario, we will apply the following formula to determine the standard error, specifically the square root of the probability of its complement divided by the total population:
SE= 
Now, given that p = 0.552 and n = 160, substituting these values leads to:
SE =
SE = 
SE = 0.039
This indicates that the proportion's standard error is 0.04
Given there are 22 participants total, the possible pairs chosen for the initial practice session are calculated as
22C2 = 231
. The probability of selecting one individual from each gender can be determined using the following calculation:
(10C1)x(12C1) / 231 = 40/77
. Approximately 52% represents the probability in percentage form, so the correct answer is the first option.
Let Monique have m brushes.
Chelsea then has <span>11m brushes because she has 11 times as many as Monique. Together they total 60 brushes, so we form the equation:
m+11m=60.
Thus 12m=60, and dividing both sides by 12 gives m=5.
Chelsea has 11m=11*5=55 brushes.
Answer: 55</span>
805 tens
805x10=8050
805 tens equals 8050