Cheryl has just climbed the steps of the metro bus. She begins walking 10 meters to the back of the bus at a constant speed of 1
.0 meters per second. At the same time, the bus begins moving forward at a constant speed of 1.0 meters per second. When Cheryl arrives at the back of the bus
2 answers:
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Answer:
NO = 8.48 units, MO = 11.59 Units
Step-by-step explanation:
∠M = 45°
∠O = 30°
∠N = 180-(45+30)
∠N = 105°
MN=6 = o
NO = m
MO = n
From sine rule
∴ NO = 8.48 units, MO = 11.59 Units
Answer:
Yes, there is sufficient evidence to support the claim that the mean cost is $1.
Step-by-step explanation:
Data Given:
The population standard deviation = $0.2
The sample mean cost = $0.93
The sample size n = 12
From above we can use the Z-test for testing the mean from the above given data.
To check whether the mean cost of newspaper is $1.00
:
= $1
:
$1
The test statistics Z =
Z =
Z = -1.212
The P-value = 2P (Z< - 1.212)
= 2 × 0.1128
= 0.2256
Since the value of P is more than the significance level; do not reject the
Conclusion: We therefore conclude that there is sufficient evidence to support the claim that the mean cost is $1.