Which place value would you look at to compare 225,and 225,988?
2 answers:
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Answer:
a₈ = 37
Step-by-step explanation:
The given arithmetic sequence is: 3, 8, 13, 18, 23, . . .
The recursive formula for the sequence is:
Here, represents the
of the sequence.
And, represents the
of the sequence.
'+5' denotes that '5' is added to the term to get the
term. In other words, the difference between two consecutive numbers in the sequence is 5.
Now, we are asked to find a₈ i.e., n =8.
Substituting in the recursive formula we get: a₈ = a₍₈₋ ₁₎ + 5 = a₇ + 5.
So, to determine a₈ we need to know a₇. From the sequence we see that a₅ = 23.
⇒ a₆ = 23 + 5 = 28.
⇒ a₇ = 28 + 5 = 32.
⇒ a₈ = 32 + 5 = 37.
Therefore, the term of the sequence is 37.
Answer:
Confidence interval is
Step-by-step explanation:
Given that 32% of fans sport is basketball as favorite sport. So total number of fans is,
So 320 fans favorite sport is basket ball.
Now find sample proportion ,
Substituting the value,
Formula for confidence interval is,
To calculate the z value.
Now divide above value by 2,
To find the value of z score calculate the area under the curve as follows
On z table, find the value of 0.975. So the row corresponding to 0.975 is 1.9 and column corresponding to 0.975 is 0.06. Adding these two values the z score is 1.96.
or find the value from excel by using command as follows,
=NORM.S.INV(0.025)= -1.959963985
Now substituting the value,
Lower end of the interval is,
Upper end of the interval is,
Therefore 95% confidence interval is