Answer:
Paedtricians claim isn't true.
Step-by-step explanation:
The hypothesis :
H0 : σ = 7
H0 : σ > 7
The test statistic ; χ² :
χ² = [(n - 1) * s²] ÷ σ²
n = 25 ; s = 4.3, σ = 7
χ² = [(25 - 1) * 4.3²] ÷ 7²
χ² = [(24 * 4.3²] ÷ 49
χ² = 443.76 / 49
χ² = 9.056
At α = 0.01 ; critical value = 42.980
Since critical value > test statistic, we fail to reject the null, H0.
1+8=9
9*40=360
--------------------------------
1:8=40:320
There are 6 portions left because 3/4x2= 6/8, 6/8 divided by 1/8 = 6
Answer:
i think its 30
Step-by-step explanation:
Answer:
HELP ME PLS :
Logan earned $8 for each dog he walked last summer. This summer, he raised his fee to $9 per dog. Express the change in Logan’s fees as a percent. Round to the nearest tenth of a percent.
Step-by-step explanation:
