Ahypothesis test has a significance level of 10%. explain what this significance level represents.

A significance level of 10% i.e.0.10 represents the chance of rejecting the null hypothesis

Step-by-step explanation:

Given :A hypothesis test has a significance level of 10%.

To Find :Explain what this significance level represents.

Solution :

Definition : The significance level is the probability of rejecting the null hypothesis when it is true.

So, significance level = 10%.

This means there is a 0.10 chance of rejecting the null hypothesis

Hence a significance level of 10% i.e.0.10 represents the chance of rejecting the null hypothesis

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.