12. The temperature (7°C) at noon at a seaside resort was recorded for a penod of 60 days The table shows some of this information
Temperature (7°C)
Number of days
10 <T 14
2
14 < T S 18
8
18 <T S 22
14
22 <T S26
23
26 < T S 30
9
30 < T S 34
4
Calculate an estimate for the mean temperature at noon during these 60 days.
Give your answer correct to 3 significant figures
b) Find the median class interval​

salary

step-by-step explanation:

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;

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %

okay, what do you want us to do?

step-by-step explanation: