1. Find the median of the following data : <br>
1) 3,1,5,6,3,4,5 <br>
2) 3,1,5,6,3,4,5,6
juin [17]
Answer:
a ) The first step - arrange them in ascending or descending.
1,3,3,4,5,5,6
then median is to find the middle so -
the middle of this is "<u>4</u>" (there are odd numbers of numbers)
b) the first step- - arrange them in ascending or descending.
1,3,3,4,4,4,6,6
then median is to find the middle so -
here the middle is 4 and 4 ( there are even numbers of numbers)
so you find average -
4+4/2 = <u>4 </u>
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<u>these are the answers I guess. </u>
Answer:
Step-by-step explanation:
We would set up the hypothesis test. This is a test of a single population mean since we are dealing with mean
For the null hypothesis,
µ ≥ 50000
For the alternative hypothesis,
µ < 50000
Since the population standard deviation is given, z score would be determined from the normal distribution table. The formula is
z = (x - µ)/(σ/√n)
Where
x = lifetime of the tyres
µ = mean lifetime
σ = standard deviation
n = number of samples
From the information given,
µ = 50000 miles
x = 45800 miles
σ = 8000
n = 29
z = (50000 - 45800)/(8000/√29) = - 2.83
Looking at the normal distribution table, the probability corresponding to the z score is 0.9977
Since alpha, 0.05 < than the p value, 0.9977, then we would accept the null hypothesis. Therefore, At a 5% level of significance, the data is not highly consistent with the claim.
There is not alot information to answer the question.
1) 10%
2)12%
3)20%
4)8%
5)50%
