Answer:
The 95% confidence interval is
The pivot function used is
Step-by-step explanation:
From the question we are told that
The data given is 246 242 248 245 250 244 252 248 248 247 250 248 246 242 248 244 245 246 250 242
The sample size is
Given that the confidence level is 95% then the level of significance is
The degree of freedom is mathematically represented as
From the student t-distribution table the critical value of is
The mean is mathematically represented as
The standard deviation is mathematically represented as
The margin of error is mathematically represented as
The 95% confidence interval is mathematically represented as
=>
=>
The pivot function used is
Answer:
Step-by-step explanation:
Since the cost for border paper is given in terms of feet and the dimensions of the gym are given in meters, we want to convert them to the same unit. Let's choose to convert feet to meters since that would be only one conversion:
Therefore, the cost of border paper is $6.99 pet 15 feet or $6.99 pet 4.572 meters.
Since the gym is rectangular, the gym's perimeter is equal to:
Therefore, the cost of the total border paper for the gym is equal to:
1. -5+2.
2. 1-4
I hope this helps. I didn't really know what it was asking.
Answer: 5 1/4
Step-by-step explanation:
We start off with 21 as the first term. So a1 = 21
The common difference is d = -3 because we subtract 3 each time to get from one term to the other (eg: 21 to 18 is minus 3)
The nth term of an arithmetic sequence is found by using this formula
an = a1 + d(n-1)
let's plug in the values we have so far to get
<span>an = 21 + (-3)(n-1)
</span>an = 21 - 3(n-1)
an = 21-3n+3
an = -3n+24
Why do this? Well it's helpful so we can find any term in the formula we want. In this case, we want the 40th term. So just plug in n = 40 from here and you're done
<span>an = -3n+24
</span><span>a40 = -3*40+24
</span>a40 = -96
pointing you to the answer of choice B) -96