For this case we have that by definition the time is given by:
Where the variable "d" represents the distance and "v" represents the speed.
So, first we need to know the total distance:
Then, the time for 75mph is given by:
Answer:
6,4 hours
we have the price of TV is $3960.if we round off to the nearest tens we get same 3960 because we have 0 at the end which means lesser than 5 so 60 will be the nearest ten.
discount =
so $990 will be the discount.
and the cost of TV after discount is
<span>A = 1443.65 sq. cm (Maybe)
Though you do not have a figure shown. </span>
Answer:
- No, there is no significant difference between the IQs of the two groups.
- Alternative Hypothesis is that the two groups have different IQs os students.
Step-by-step explanation:
We are provided that IQs of 16 students from one area of a city had a mean of 107 and a standard deviation of 10 while the IQs of 14 students from another area of the city had a mean of 112 and a standard deviation of 8.
And we have to check that is there a significant difference between the IQs of the two groups.
Firstly let, <em>Null Hypothesis, </em><em> : The two groups have same IQs { </em><em> }</em>
<em> Alternate Hypothesis, </em><em> : The two groups have different IQs{ </em><em>}</em>
Since we don't know about population standard deviations;
The test statistics we will use here will be ;
follows t distribution with degree
of freedom { }
Here, = 107 = 112 = 10 = 8
= 16 = 14
= = 9.1261
<em> Test statistics</em> = follows
= -1.50
<em>Now at 1% level of significance t table is giving the critical value of -2.467 and our test statistics is higher than this means it does not fall in the rejection region so we will accept our null hypothesis and conclude that there is no significant difference between the IQs of the two groups.</em>
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Answer:
I'm not sure if this is right but y=x
Step-by-step explanation: