the volume of a cone is 3πx3 cubic units and its height is x units. which expression represents the radius of the cone’s base, i

Answer: D)

Step-by-step explanation:

Based on the provided information, we have

Sample size: n= 15

sample mean:

Sample standard deviation: s= $20

Since the population standard deviation is not known, we utilize a t-test.

For a significance level of 95% confidence:

Critical t-value :  [Using the Student's t-value table]

The required 95% confidence interval yields:-

Thus, the sought-after 95% confidence interval for the mean amount spent by credit card customers during their initial visit to the new store in the mall, assuming normal distribution of the spending amounts, is:

Answer:

A: With each additional procrastination day, the expected grade drops by 3.64 points.

Step-by-step explanation:

The slope of a Regression Line

A linear equation can be expressed in slope-intercept form:

y = mx + b

Here, m represents the slope and b indicates the y-intercept.

The slope reveals the rate and direction of change in the graph as x varies.

If m is negative, increases in x lead to decreases in y.

ŷ = –3.64x + 96.5

Where:

x = number of procrastination days

ŷ = anticipated grade

A: With each additional procrastination day, the expected grade drops by 3.64 points.