1/3 of all=apples
2/3=rest=oranges+pears
pears=340
oranges=80+apples
ok
pears+oranges=2/3
apples=1/3
so pears+oranges=2(apples)
340+80+apples=2(apples)
minus apples
340+80=apples
420=apples
420 apples
420=apples=1/3 of total
420 times 3=1260 fruits total
X=-13
Because 9 plus 4 is 13 but x can't be negative so you divide my negative 1 and get x=-13
Answer:
If you're trynna simplify these are the answers:
4.) -116
5.) -13
Step-by-step explanation:
4.) −4((5)(4)+9)
=(−4)((5)(4)+9)
=(−4)((5)(4))+(−4)(9)
=−80−36
=−116
5.) 9+84−(6)(4)
=9+2−(6)(4)
=11−(6)(4)
=11-24
= -13
Answer:
Since the calculated value of t =-0.427 does not fall in the critical region so we accept H0 and conclude that there is enough evidence to show that mean difference in the age of onset of symptoms and age of diagnosis is 25 months .
Step-by-step explanation:
The given data is
Difference d= -24 -12 -55 -15 -30 -60 -14 -21 -48 -12 -25 -53 -61 -69 -80
∑ d= -579
∑d²= 29871
1) Let the hypotheses be
H0: ud= 25 against the claim Ha: ud ≠25
H0 : mean difference in the age of onset of symptoms and age of diagnosis is 25 months .
Ha: mean difference in the age of onset of symptoms and age of diagnosis is not 25 months.
2) The degrees of freedom = n-1= 15-1= 14
3) The significance level is 0.05
4) The test statistic is
t= d`/sd/√n
The critical region is ║t║≤ t (0.025,14) = ±2.145
d`= ∑di/n= -579/15= -38.6
Sd= 23.178 (using calculators)
Therefore
t= d`/ sd/√n
t= -38.6/ 23.178√15
t= -1.655/3.872= -0.427
5) Since the calculated value of t =-0.427 does not fall in the critical region so we accept H0 and conclude that there is enough evidence to show that mean difference in the age of onset of symptoms and age of diagnosis is 25 months .
