Determine the null and alternative hypotheses
The quality control manager at the lightbulb factory needs to find out whether the mean life of large shipment of lightbulbs is equal to the specified value of 375 hours. Determine the null and alternative hypotheses.
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Household income doesn't tend to follow a normal distribution in a specific state, yet average income is approximately $45,000/year in this state, with standard deviation of about $9000.
An RL circuit has the given (in volts) by 3 sin 2t, the resistance of 10 ohms, the inductance of 0.5 henry and the initial current of 6 amperes. Determine current in circuit at any time t.
Write down the formula that represents the probability mass function of X. Determine the probability that the Phillies will repeat and win the series in six games?
Determine the expression for amount of material remaining at any time t. Amount of material after four hours. Time at which material has decayed to one half of original amount.
The Glen Valley Steel Company manufactures steel bars. If the production process is working properly, it turns out steel bars that are normally distributed with mean length of at least 2.8 feet.
At the 0.05 level of significance, is there evidence that the population proportion of claims processed under this new system is higher than the article reported for the previous system? Calculate the p-value and interpret its meaning.
Find probability that voltage regulator fails during the ownership? If the regulator fails after you own automobile 3 years and it is replaced, find mean time until next failure?
You take the data. Now it's time to tell the boss what the equation for the straight line is. What do you tell her?
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