RM Unity Lesson
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Arithmetic sequences
Identifying arithmetic sequences
Which of these are arithmetic
sequences?
3, 6, 9, 12, ...
-2, 1, 4, 7, ...
27, 27.75, 28.5, 29.25, ...
1, 2, 3, 5, ...
1, 3, 9, 27, ...
1, 1.30, 1.60, 1.90, ...
2, 12, 22, 32, ...
2, -2, -6, -10, ...
6, 16, 116, 1116, ...
2, 11, 36, 45, ...

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;

not sure but it may be b, as i said i'm not sure.

are ya tryin to ask something or is this a statement