To prevent non-response bias, it is generally recommended to aim for a response rate of at least 60% or higher, so MyBook should ideally have at least 1260 surveys returned.
The level of survey response required to prevent non-response bias depends on various factors such as the target population, the survey's objective, and the overall response rate. In general, a higher response rate is preferred to minimize non-response bias. A common rule of thumb is to aim for a response rate of at least 60% or higher.
If a substantial number of surveys are not returned, the results may not accurately represent the opinions and characteristics of the entire target population. For instance, if only 30% of the surveys are returned, it leaves a large proportion of the population unaccounted for, potentially biasing the results towards those who responded.
However, it's essential to consider the context of the survey and the population being surveyed. In some cases, achieving very high response rates might be impractical or unnecessary, especially when dealing with large populations or sensitive topics.
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Answer:
2100
Step-by-step explanation:
Answer:
1. 617.5 cm³
2. 335.6 in³
3. 151.6 m³
4. 3479.1 ft³
Step-by-step explanation:
1.
B1: 19.5 × 9 = 175.5
B2: 6 × 13 = 78
sqrt(B1 ×B2) = 117
h = 5
Volume = ⅓ × 5 × [175.5 + 78 + 117]
617.5
2.
B1: 3.14 × 4.5² = 63.585
B2: 3.14 × 3² = 28.26
sqrt(B1 ×B2) = 42.39
h = 7.5
Volume = ⅓ × 7.5 × [63.585 + 28.26 + 42.39]
335.5875
3.
B1: ½(8+12) × 6 = 60
B2: ½(3+4.5) × 2.25 = 8.4375
sqrt(B1 ×B2) = 22.5
h = 5
Volume = ⅓ × 5 × [60 + 8.4364 + 22.5]
151.5625
4.
B1: 3.14 × 12² = 452.16
B2: 3.14 × 7² = 153.86
sqrt(B1 ×B2) = 263.76
h² = 13² - (12-7)²
h² = 13² - 5²
h² = 144
h = 12
Volume = ⅓ × 12 × [452.16 + 153.86 + 263.76]
3479.12
What is X?
— please help i will give brainliest!
Answer:
3/7 x +5=8
move 5 to the other side
3/7 x= 8-5
3/7 x= 3
then move 7 to the other side it's sign is ÷ it will be ×
then 3x=3×7
3x=21
then move 3to the other side it's sign is × it will become ÷
x= 21/3
x= 7
Answer:
x=7
Step-by-step explanation: