Answer:
there is significant evidence to support that the claim that the mean time women spend watching television less than the mean time spent by men.
Step-by-step explanation:
H0 : μw = μm
H1: μw < μm
The test statistic :
(x1 - x2) / sqrt[(sp²/n1 + sp²/n2)]
df1 = 14 - 1 = 13
df2 = 17 - 1 = 16
Pooled variance = Sp² = (df1*s1² + df2*s2²) ÷ (n1 + n2 - 2)
Sp² = ((13*4^2) + (16*4.2^2)) ÷ (13 + 16)
Sp² = 16.90
t = (12.9 - 16.4) ÷ sqrt((16.90/14 + 16.90/17))
t = - 3.5 ÷ 1.4836645
t = - 2.359
Using the Pvalue from Tscore ; at 95% ; df = 29
Pvalue = 0.0126
Pvalue < α
0.0126 < 0.05 ;
Hence, we reject the null and conclude that there is significant evidence to support that the claim that the mean time women spend watching television less than the mean time spent by men.
Answer:
1) 55
2) 60
Step-by-step explanation:
180 - (55 + 70) = 55
180 - (35 + 85) = 60
Hope this helps!
Answer:42
Step-by-step explanation:
Answer:
The correct answer is all are rationals.
Step-by-step explanation:
Numbers that cannot be written as fraction of integers are irrationals.
145.25 is rational as it can be expressed as a fraction.
^2√64 is rational as this √64 is equal to 8.
-22 is a rational as integers are a subset of rationals only.
0 is a rational number.
√121 is rational as the value of √121 is 11 and 11 is rational.
0.6⁻ is rational as this can be expressed as fraction 
.
