Bro i did the same test [i picked c. for my answer]
Answer and Step-by-step explanation: The null and alternative hypothesis for this test are:
To test it, use F-test statistics and compare variances of each treatment.
Calculate F-value:
F = 1.8356
The <u>critical value of F</u> is given by a F-distribution table with:
degree of freedom (row): 20 - 1 = 19
degree of freedom (column): 20 - 1 = 19
And a significance level: α = 0.05
= 2.2341
Comparing both values of F:
1.856 < 2.2341
i.e. F-value calculated is less than F-value of the table.
Therefore, failed to reject 
, meaning there is <u>no sufficient data to support the claim</u> that sham treatment have pain reductions which vary more than for those using magnets treatment.
Answer:
The median is located at the 2.5th position, which is halfway between the values 52 and 57.
Step-by-step explanation:
The Median is referred to as the Middle term of a set of Data when ordered in Ascending/Descending order.
Consider the numbers 50, 230, 52, and 57
Arranging them in an Ascending Order
50, 52, 57, 230
The number of data in the set is even.
Dividing the data into two halves (50, 52 and 57, 230)
The median is halfway between the two halves.
The median is located at the 2.5th position, which is halfway between the values 52 and 57.
Answer:
The range is 5.
Step-by-step explanation:
You can deduce this by concluding all other statements are true, or by calculating the range. 10 - 1 = 9
