Answer:
Step-by-step explanation:
Using the alternative hypothesis (µ < µ0),
To find the p-value with test statistic -1.25 and assuming a standard level of significance of 0.05, using a p value calculator, the p-value is 0.1057 which is great that 0.05. Thus, the results is not significant.
Using the p value calculation.
1. Check the left tailed z table as the test statistic is negative,
2. Then find the probabilitythat z is greater than your test statistic (look up your test statistic on the z-table- the value under 1.2 and 0.05 which is 0.8944
3. Then, find its corresponding probability, and subtract it from 1 to get your p-value- 1-0.8944 = 0.1056.
Answer:
225 students scored 65 or better and 75 students scored 88 or better.
Step-by-step explanation:
We are given that The five-number summary for the scores of 300 nursing students are given :
Minimum = 40
Median = 82
Maximum = 100
is the first quartile and is the median of the lower half of the data set. 25% of the numbers in the data set lie below and about 75% lie above .
is the third quartile and is the median of the upper half of the data set. 75% of the numbers in the data set lie below and about 25% lie above
i) .About how many students scored 65 or better?
Since we know that 75% lie above .
So, Number of students scored 65 or better = 
ii)About how many students scored 88 or better?
Since we know that 25% lie above
So, Number of students scored 88 or better = 
Hence 225 students scored 65 or better and 75 students scored 88 or better.
To solve this, look for some factors which could go into the number. Since it ends in a 0, the number 10 is a factor. Since 990 is the product of these factors (meaning they are multiplied together) you can divide out the 10, since division is the opposite of multiplication. This leaves you with the number 99. You can repeat this same process again, realizing that 9 must be a factor of 99 because both digits are 9. If you divide out the 9, this leaves you with 11.
Thus, we know 9*10*11 equals 990. Also, these numbers are consecutive because they increase by 1 each time.
The sum of the numbers is 9+10+11, whicj Iis 30.
ANSWER: 30
a) By addition of functions, we find that h(17) = 28.
b) According to the graph, we find that f(- 1) = 1 and f(e) ≈ - 3.8.
<h3>How to analyze functions</h3>
In this question we must analyze functions based on properties for operations between functions and representations on Cartesian plane. a) The <em>first</em> part consists in evaluating each of the two functions and find the result by definition of addition between two functions:
f(17) = √(17 - 1)
f(17) = 4
g(17) = 2 · 17 - 10
g(17) = 24
By addition of functions:
h(x) = (f + g) (x) = f(x) + g(x)
h(17) = (f + g) (17) = f(17) + g(17)
h(17) = 4 + 24
h(17) = 28
By addition of functions, we find that h(17) = 28.
b) The <em>second</em> part consists in finding the values corresponding to two points lying on the curve, domain corresponds to <em>horizontal</em> axis and range corresponds to <em>vertical</em> axis:
f(- 1) = 1, f(e) ≈ - 3.8
According to the graph, we find that f(- 1) = 1 and f(e) ≈ - 3.8.
To learn more on functions: brainly.com/question/12431044
#SPJ1
G(-1) = 1
g(-1) = (-1)^3 + 6(-1)^2 + 12(-1) + 8
g(-1) = 1
