Answer:
And we can use the normal standard distribution table or excel and with the complement ruler we got:
Step-by-step explanation:
We know the following info given:
represent the true mean
represent the population deviation
represent the sample size selected
Since the sample size is large enough (n>30) we can use the central limit theorem and the sample mean would have the following distribution:
And for this case we want to find this probability:
And we can use the z score formula given by:
And replacing we got:
And we can use the normal standard distribution table or excel and with the complement ruler we got:
Answer:
yes a
Step-by-step explanation:
Answer:
In order to find the slope, you need to find the difference in the x values and the difference in the y values. To do this, you write out y2-y1/x2-x1, insert your x and y values, and get your answer. Then, you find your y-intercept (where the x value is 0).
Answer:
5000
Step-by-step explanation:
2% of 250,000 is 5000
Answer: r = 4 sec θ
Explanation: Using: x = r cos θ then r cos θ = 4 ⇒ r = 4 cos θ = 4 sec θ
