Derived Channel
1.54K subscribers
252 photos
4 videos
374 files
68 links
القناة الأساسية
@stepbystep001

ومـما زادني شـرفـاً وتـيــهـاً
وكدت بأخمصي أطأ الـثريا
دخولي تحت قولك يا عبادي
وأن صـيَّرت أحمد لي نـبيـا
Download Telegram
The probability of Type 1 error is referred as?
Anonymous Quiz
64%
α
10%
β
21%
1-α
5%
1-β
The power of the test .....
Anonymous Quiz
24%
1-α
17%
β^2
10%
α^2
49%
1-β
A paired T test consists of n pairs of observations. What is the number of degrees of freedom of the test?
Anonymous Quiz
18%
2n-1
72%
n-1
6%
n
4%
2n
If ‘m’ is the mean of Poisson Distribution, the P(0) is
given by ___________
m لامدا هي
Anonymous Quiz
73%
e ^ -m
9%
em
6%
e
12%
m ^ -e
When the p-value is less than the significance level (α), the decision in hypothesis testing is to
Anonymous Quiz
29%
Accept the null hypothesis
63%
Reject the null hypothesis
4%
Revise the null hypothesis
3%
Need more info
في حالة مجموعتين A, B
A
فيها القيم 1,2,3,4
B
فيها القيم
5,6,7,8
تقاطع المجموعتين هيطلع لك فاي
لكن الاحتمال هيطلع لك 0
The assignment of value(s) to a population prameter based on a value of the corresponding sample statistic is called ..........
Anonymous Quiz
22%
Hypothesis test
64%
estemation
6%
Find the probability
7%
Propotion
when the confidence level increases, z value ....
Anonymous Quiz
10%
Does not change
53%
Increases
33%
decreases
4%
become 0
To decrease the width of a confidence interval ....
Anonymous Quiz
7%
Lower the confidence level
29%
Increase sample size
53%
Both A & B
11%
decrease sample size
Derived Channel pinned «عفوا يا شباب، العملية المقصودة هي التقاطع»
For two events A and B, let P(A)=0.4, P(B)=K, and P(A U B)=0.6 , then k equals……
Anonymous Quiz
14%
0.2, when A,B are independent
77%
0.2, when A,B are mutually disjoint
3%
0.2, when A,B are dependent
6%
ALL
The mean of a binomial distribution
Anonymous Quiz
77%
np
13%
npq
4%
pq
6%
sqrt(npq)
Data presented in the form of a frequency distribution table are called………….
Anonymous Quiz
89%
Grouped data
8%
UnGrouped data
2%
Redundant data
1%
None
On average, a household receives 15 telemarketing phone calls per Month. What is the probability that a randomly selected household receives exactly 8 telemarketing phone calls during a given Month.
Anonymous Quiz
3%
0.0121
66%
0.01944
17%
0.13544
14%
0.0217
In tossing coin 2 times, what is the probability of at most one of them are heads given that at least one of them tails.
Anonymous Quiz
6%
0.25
15%
0.5
12%
0.75
67%
1
For a given data with mean, median, and mode equal 8,5, and 3 , respectively, this data follow frequency distribution curve………..
Anonymous Quiz
8%
Skewed to the left
88%
Skewed to the right
4%
Skewed to the right
The value of the …………tells how closely the values of a data set are clustered around the mean.
Anonymous Quiz
6%
Median
2%
Mode
11%
Range
81%
Stander Deviation
population is 1200 and stander deviation is 33 we take 80 element as a sample the stander deviation of sample is
Anonymous Quiz
6%
3.24
42%
3.68
48%
3.56
4%
3.87
image_2023-05-30_18-12-06.png
20.5 KB
السؤالين الجايين علي دا