Answer:
110
Step-by-step explanation:
= 120+100/2
=220/2
=110
CLASS MARK = HIGHEST OBSERVATION +LOWEST OBSERVATION BY 2
Answer:
INCLUDES ANSWER+ EXPLANATION
hope this helps!!
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.
Answer:
4x + 7
Step-by-step explanation:
9x - 5x = 4x
-3 + 10 = 7
We could represent this as an equation:
47x = $209, where x is the number of lawns mowed.
What we could do is divide 209 by 47 to find out how many lawns Jerry would need to mow. This would give us about 4.4 (when rounded). Since Jerry has to mow entire lawns, we would have to round that up to 5 lawns. Jerry would earn $235 for those, which is more than enough for those new video games.
