Answer:
false
Step-by-step explanation:
we have the data set
3,1,7,0,4
step 1
Find out the sample mean
sample mean=(3+1+7+0+4)/5
sample mean=15/5
sa,ple mean=3
step 2
Complete the table
x (x-mean) (x-mean)^2 x^2
3 (3-3) (3-3)^2 0
1 (1-3) (1-3)^2 4
7 (7-3) (7-3)^2 16
0 (0-3) (0-3)^2 9
4 (4-3) (4-3)^2 1
--------------------------------------------------------------------------
15 30
Find out the standard deviation of the sample
SD=√(30/n-1)
SD=√(30/5-1)
SD=2.74
Answer:
Set 1 Angle A is 90
Set 1 Angle B is 45
Set 2 Angle B is 15
Set 2 Angle C is 90
2)
Set 1 Angles A and C are both 62
Set 2 Angles B and D are both 120
Step-by-step explanation:
Answer:
Association between the variables and yes.
Step-by-step explanation:
Given that researchers recorded the temperatures at The Fashion Mall at Keystone in Indianapolis during 40 random days in November and December 2013, then again in June and July 2014
For these same days, they recorded the mall sales. The correlation coefficient between these variables was -0.884
The test was done and significant at 1% level
a) the correlation coefficient is the strength of association between the two. Here we have strong negative correlation between the two variables. If correlation coefficient absolute value is nearer to 1, we say strong.
b) Yes . The lower the temperature the higher is the sales this is because of strong negative correlation.
Answer:
just split the awnser
Step-by-step explanation: