 , 02.12.2019 23:10

# Amanufacturer of rechargeable laptop batteries markets its batteries as having, on average, 500 charges. a consumer group decides to test this claim by assessing the number of times 30 of their laptop batteries can be recharged and finds the average is 497, with a standard deviation of 10. the resulting p-value is .; thus, the null hypothesis is not rejected. the consumer group concludes that the manufacturer's claim that its laptop batteries can be recharged, on average, 500 times is accurate. what type of error is possible in this situation?   ### Another question on Mathematics Mathematics, 03.02.2019 01:53
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Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above
Amanufacturer of rechargeable laptop batteries markets its batteries as having, on average, 500 char...
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