x=
16
7−
177
=−0.394
x=
16
7+
177
=1.269Step-by-step explanation:
Yes because 100 percent is 10 hrs so 1 more hr is 110 percent. And if u try to put it in a equation it will be 110%
Answer:
D. The company's chocolate bars weigh 3.2 ounces on average.
Step-by-step explanation:
We are given that a company claims that its chocolate bars weigh 3.2 ounces on average.
The company took many large samples, and each time the mean weight of the sample was within the 95% confidence interval.
Definition of 95% confidence level: 95% confidence level means a range of values that you can be 95% certain contains the true mean of the population.
Thus by considering definition we can conclude that The company's chocolate bars weigh 3.2 ounces on average.
Thus Option D is correct.
D. The company's chocolate bars weigh 3.2 ounces on average.
Answer:
a. 250 fields
b. 220 to 280 fields
c. Fields are not independent
Step-by-step explanation:
a. The average number of fields sampled that are infested with whitefly =
number of fields X Percentage sampled, 10%
= 2500 X 10% = 250 fields
b. Going by the binomial distribution is the square of the standard deviation, divided by (the product of the sample size n, and the probability a and b). While the standard deviation is the square root of the variance
σ = √nab
= √na(1-a) = √2500 X 10% X (1- 10%)
= √225 = 15
Now let's use the empirical rule that says about 95% of the observations are within two standard deviations from the mean since the number of trials is very large
μ - 2σ = 250 - 2(15) = 220
μ + 2σ = 250 + 2(15) = 280
Approximately 220 to 280 fields are expected to be infested going by 95% probability observation
c. Since x=25 is considered small and is not captured within 220 and 280 fields making one of the characteristics of binomial experiment not satisfied which expects each field to be independent. Making fields that are close together more likely to be infected.
Answer:
{15 - {(25 x 2.4) + 7}}- (3 x 2) = -16
Step-by-step explanation:
15 - 25 x 2.4 + 7 - 3 x 2= -16 is the given equation.
Now by the rule of BODMAS:
here B = Bracket, O means Of, D means Divide, M means Multiplication , A means Addition and S means Subtraction.
So, according to this order start putting brackets.
first operation is multiplication, second is addition and then subtraction.
⇒ 15 - 25 x 2.4 + 7 - 3 x 2 = {15 - {(25 x 2.4) + 7}}- (3 x 2)
Hence, {15 - {(25 x 2.4) + 7}}- (3 x 2) = -16
