find the range of this data set 64 76 46 88 88 43 99 50 55

The number of ATM transactions of a bank per day were recorded at 12 locations in a city. The mean of the sample was 88.5 transactions, with a sample standard deviation of 42. Find the 98% confidence interval of the true mean. => 19.06 < μ < 157.94 or 78.99 &l..

The life expectancy at birth (years) of males and females in some countries is shown here. Males 67 69 69 57 55 54 50 49 50 48 Females 77 76 72 60 59 57 53 51 49 50 Calculate the correlation coefficient and describe the relation. => + 0.98; strong p..

P & R washing machine manufacturing company conducted tests on different models of washing machines before launching them into the market to know the weights (in kgs) they can withstand for a particular drum size. The results are 6, 5.5, 7, 8, 6.3 and 7.2. Find the standard devi..

If Z, Z 1 and Z 2 are complex numbers, th..

="center"> 254 Osmium Os 76 190 Oxygen O 8 16 Palladium Pb 46 106 Phosphorus P 15 31 Platinum Pt 76 195 Plutonium Pu 94 242 Polonium Po 64 210 Potassium K 19 39 Praesodymium Pr 59 141 Promethium Pm 61 1..

The roster form is S = {(-2, 5), (-1, -1), (0, -3), (1, -1), (2, 5)}. Yes, S is a function. It is many-one and into function. Domain = {-2, -1, 0, 1, 2} = A ; Range = {-3, -1, 5}; Co-Domain = {-3, -1, 1, 5} = B. (i) Find the domain and the range of the function. (ii) D..

Find the fraction which becomes when the denominator is increased by 5 and is equal to when the numerator is diminished by 4. Let the fraction by When y is increased by 5, fraction becomes or 2x = y +..

>If mole fraction is used to represent the solubility of the gas in the solution, th..

>This problem is made up of two separate simple problems. AC is the tower. (i) To find BC, distance of the boat from the tower. AC is tower. is the angle of depression. B = 29 o (alternate ) = 61 o (why do we find it?) BC = 180 x tan 61 o . = 180 x 1.804 = 324.72 = 325 m. (ii) T..

>An alloy is made by mixing 360 g of copper of density 9 g cm - 3 , with 80 g of iron of density 8 g cm - 3 . Find the density of the alloy, assuming the volume of each metal used does not change during melting. Suggested answer : Volume of copper = 40 cm 3 Volume of iron = 10 cm 3 Total ..