Answer:
95% confidence interval for the mean weight of newborn elephant calves is between a lower limit of 240.87 pounds and an upper limit of 247.13 pounds.
Step-by-step explanation:
Confidence Interval = mean + or - Error margin (E)
mean = 244 pounds
sd = 11 pounds
n = 50
degree of freedom = n - 1 = 50 - 1 = 49
Confidence level = 95%
t-value corresponding to 49 degrees of freedom and 95% confidence level is 2.010
E = t×sd/√n = 2.010×11/√50 = 3.13 pounds
Lower limit = mean - E = 244 - 3.13 = 240.87 pounds
Upper limit = mean + E = 244 + 3.13 = 247.13 pounds
95% confidence interval is between 240.87 and 247.13 pounds.
Answer: add 4 on both sides
Step-by-step explanation:
Answer:
p(4p - 9) =12 ⇒ 4p² - 9p = 12 ⇒ 4p² - 9p - 12 = 0
- This is a quadratic equation
p(4p - 9) - 12 ⇒ 4p² - 9p - 12
- This is a quadratic expression
Isnt the first one zero becuse the number between -1 and 1 coupd only be zero
THat is the value which you multiply each term by, to get the nest term:-
for example the common ratio for the sequence 2 , 4, 8, 16 is 2
because 2*2 = 4
4 * 2 = 8
8 * 2 = 16