To determine the effect of 100% nitrate on the growth of pea plants, several specimens were planted and then watered with 100% nitrate every day. at the end of two weeks, the plants were measured. here are data on seven of them: 17.5 14.5 15.2 14.0 17.3 18.0 13.8 assume that these data are a random sample from a normal distribution n(μ, σ) find the value of a point estimate of μ.(b) find the value of a point estimate of σ.(c) give the endpoints for a 90% confidence interval for μ.

Step-by-step explanation:

From the attached photo

mean = 15.76

Standard deviation = 1.66

c) We want to determine a 90% confidence interval for the mean growth of pea plants

For a confidence level of 90%, the corresponding z value is 1.645. This is determined from the normal distribution table.

We will apply the formula

Confidence interval

= mean ± z ×standard deviation/√n

It becomes

15.76 ± 1.645 × 1.66/√7

= 15.76 ± 1.645 × 0.63

= 15.76 ± 1.04

The lower end of the confidence interval is 15.76 - 1.04 =14.72

The upper end of the confidence interval is 15.76 + 1.04 =16.8

definition: a circle is the  set of all points in a plane that are equidistant  from a given  point  called the center of the circle. we use the symbol ⊙ to represent a circle. the a line segment from the center of the circle to  any point  on the circle is a radius of the circle.

step-by-step explanation:

i googled it and this is what i got i don't know how it is. sorry.

answer: i believe it’s 245.04

step-by-step explanation: