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icang [17]
3 years ago
6

Which of these is a factor in this expression?

Mathematics
1 answer:
charle [14.2K]3 years ago
8 0

Answer:

May be the ans is option C and A

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A certain delivery service offers both express and standard delivery. 75% of parcels are sent by standard delivery, and 25% are
zloy xaker [14]

Answer:

The probability that the parcel was shipped expressed and arrived the next day = 0.2375 .

Step-by-step explanation:

We are given that a certain delivery service offers both express and standard delivery.

Let Proportion of parcels sent by standard delivery, P(A_1) = 0.75

      Proportion of parcels sent by express delivery, P(A_2) = 0.25

Let <em>event B = Parcel arriving the next day</em>

Also, Probability of parcel arriving the next day given it was sent through standard delivery, P(B/A_1) = 0.8

Probability of parcel arriving the next day given it was sent through express delivery, P(B/A_2) = 0.95

Now, Probability that the parcel was shipped expressed and arrived the next day = P(A_2) * P(B/A_2) = 0.25 * 0.95 = 0.2375 .

5 0
3 years ago
Statisticians prefer large samples. Describe briefly the effect of increasing the size of a sample (or the number of subjects in
Flauer [41]

Answer:

Margin of Error decreases

Pvalue decreases

Power increases

Step-by-step explanation:

The margin of error decreases as sample size increases given the same level of confidence, hence, the interval gets narrower.

The margin of error = (Zcritical * σ/√n) ; where, n is the denominator, as the denomination increases, the obtained value will decrease, hence, the margin of error.

When we have a false H0, then we expect a statistical result which will reject H0, with all facts remaining unchanged , increase in sample size n, will lead to decrease in Pvalue, because a lower P value increases the significance of statistical test needed to reject H0.

The power of a fixed level test when the null hypothesis is true, higher power is required to reject the null , increasing n will increase the probability of rejecting H0, by increasing the power of a fixed level test.

8 0
3 years ago
The attendance for the first night of a play is 455. The attendance increases by 16 on each of the next 9 nights.
scZoUnD [109]
455+(16*9)=
455+144=599
7 0
3 years ago
Read 2 more answers
4. 225 is 75% of what number?
scoray [572]

Answer:

300

Step-by-step explanation:

\frac{225}{x} = \frac{75}{100}

Since 225 is 75% of a whole, write the proportion such that 225 corresponds to 75% and x, the number we're searching for, corresponds with 100%

Cross multiply to solve and divide by 75 to isolate x:

225 x 100 = 75x

22500 = 75x

300 = x

3 0
3 years ago
Which rule describe the linear function for the graph?(Hint:You can graph points for each equation.)
zzz [600]
Hello : 
<span>the linear function has form : y = ax </span>
8 0
4 years ago
Read 2 more answers
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