Answer:
Correct option: (B)
Step-by-step explanation:
A one-sample <em>t</em>-test can be performed to determine whether the mean weight of female college students is still 59.4 kg.
The hypothesis can be defined as:
<em>H₀</em>: The mean weight of female college students has changed.
<em>Hₐ</em>: The mean weight of female college students has not changed.
The information provided is:
As the there is no information about the population standard deviation we will use a <em>t</em>-test for the mean.
The test statistic is:
Decision rule:
If the if the <em>p</em>-value of the test is less than the significance level of the test <em>α</em> then the null hypothesis will be rejected and vice versa.
The degrees of freedom of the test is:
The test is two-tailed.
Compute the <em>p</em>-value of the test as follows:
*Use a <em>t</em>-table for the probability.
The <em>p</em>-value = 0.13 > <em>α</em> = 0.10
The null hypothesis was failed to be rejected.
As the null hypothesis was rejected it can be concluded that there is not sufficient evidence that the mean weight of female students has changed.
Answer: 0.67x
Answer: -0.33x^2
Step-by-step explanation:
The answer is 20.5
Subtract both 7.5 and 22 from 50
50-7.5 = 42.5
42.5 - 22 = 20.5
Hope this helps :)
Answer:
Step-by-step explanation:
the simple interest formula= principal* interest rate*time
simple interest : 100000*%2*2 years
simple interest= 4000 dollars
compound quarterly : A=principal(1+r/4)^t
since it is quarterly and have 4 quarters in a year, and 8 in two years.
compound quarterly: 100000(1+0.03/4)^8=106159.88
it is better to invest with compound interest because it add 6159 dollars in two years to the investment of 100000 dollars.
the difference between the interest: 6159.88-4000=2159.88
In the given problem, the
numerical value of 805, which is in the tens place, we can first elaborate and
clearly specify the order of numbers by using the expanded form:
<span><span>1. </span><span> 800 = eight
hundred / hundreds</span></span>
<span><span>2. </span><span> 0 = zero / tens</span></span>
<span><span>3. </span><span> 5 = five / ones
</span></span>
Conclusively the tens value of
the number is zero or none, since zero is not a real number then it can’t be
considered but nevertheless, the value is 0 expressed with respect to the whole
numbers.
